Anabaena: различия между версиями
Материал из Поле цифровой дидактики
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|Description='''Анабена''' ({{lang-la|Anabaena}}) — род нитчатых [[Цианобактерии|цианобактерий]] (синезелёных водорослей), входит в состав [[планктон]]а. Клетки округлые или бочонковидные, имеются [[гетероцисты]]. Для анабены характерно наличие специализированных клеток для переживания неблагоприятного периода – [[Акинеты|акинет]]. Известны своими [[Азотфиксация|азотфиксирующими способностями]], образуют [[Симбиоз|симбиотические отношения]] с определёнными растениями, такими, как некоторые [[папоротники]]. Являются одними из четырёх родов цианобактерий, которые производят [[нейротоксин]]ы, наносящими ущерб местной дикой природе, а также сельскохозяйственным и домашним животным. | |Description='''Анабена''' ({{lang-la|Anabaena}}) — род нитчатых [[Цианобактерии|цианобактерий]] (синезелёных водорослей), входит в состав [[планктон]]а. Клетки округлые или бочонковидные, имеются [[гетероцисты]]. Для анабены характерно наличие специализированных клеток для переживания неблагоприятного периода – [[Акинеты|акинет]]. Известны своими [[Азотфиксация|азотфиксирующими способностями]], образуют [[Симбиоз|симбиотические отношения]] с определёнными растениями, такими, как некоторые [[папоротники]]. Являются одними из четырёх родов цианобактерий, которые производят [[нейротоксин]]ы, наносящими ущерб местной дикой природе, а также сельскохозяйственным и домашним животным. | ||
|Higher order taxa=Bacteria; Cyanobacteria; Nostocales; Nostocaceae; Anabaena | |Higher order taxa=Bacteria; Cyanobacteria; Nostocales; Nostocaceae; Anabaena | ||
|Species= | |Species=* ''Anabaena abnormis'' Proskina-Lavrenko & Makarova | ||
* ''Anabaena aequalis'' Borge | |||
Anabaena abnormis Proskina-Lavrenko & Makarova | * ''Anabaena aequalis'' f. ''anomala'' Kossinska [Kossinskaya] | ||
Anabaena aequalis Borge | * ''Anabaena aerophila'' Brabez | ||
Anabaena aequalis f. anomala Kossinska [Kossinskaya] | * ''Anabaena aeruginosa'' N.L.Gardner | ||
Anabaena aerophila Brabez | * ''Anabaena alatospora'' Gonzalvez & Kamat | ||
Anabaena aeruginosa N.L.Gardner | * ''Anabaena alatospora'' var. ''ona'' S.A.Guarrera & R.O.Echenique | ||
Anabaena alatospora Gonzalvez & Kamat | * ''Anabaena allahabadii'' A.K.Mitra | ||
Anabaena alatospora var. ona S.A.Guarrera & R.O.Echenique | * ''Anabaena ambigua'' var. ''unispora'' C.L.Sant’Anna | ||
Anabaena allahabadii A.K.Mitra | * ''Anabaena anisococca'' Migula | ||
Anabaena ambigua var. unispora C.L.Sant’Anna | * ''Anabaena aspera'' Frémy | ||
Anabaena anisococca Migula | * ''Anabaena attenuata'' Kiselev | ||
Anabaena aspera Frémy | * ''Anabaena augstumalis'' Schmidle | ||
Anabaena attenuata Kiselev | * ''Anabaena augstumnalis'' Schmidle | ||
Anabaena augstumalis Schmidle | * ''Anabaena australica'' Playfair | ||
Anabaena augstumnalis Schmidle | * ''Anabaena australica'' var. ''constricta'' Playfair | ||
Anabaena australica Playfair | * ''Anabaena austroafricana'' Cronberg & Komárek | ||
Anabaena australica var. constricta Playfair | * ''Anabaena azotica'' Ley | ||
Anabaena austroafricana Cronberg & Komárek | * ''Anabaena baltica'' E.J.Schmidt | ||
Anabaena azotica Ley | * ''Anabaena batophora'' Frémy | ||
Anabaena baltica E.J.Schmidt | * ''Anabaena beckii'' G.De Toni | ||
Anabaena batophora Frémy | * ''Anabaena bederi'' Seckt | ||
Anabaena beckii G.De Toni | * ''Anabaena belmontica'' C.G.M.Archibald | ||
Anabaena bederi Seckt | * ''Anabaena berkeleyana'' Batters | ||
Anabaena belmontica C.G.M.Archibald | * ''Anabaena bernardinensis'' Chodat & Zender | ||
Anabaena berkeleyana Batters | * ''Anabaena bharadwajae'' B.N.Prasad | ||
Anabaena bernardinensis Chodat & Zender | * ''Anabaena bispora'' Gayral & Mazancourt | ||
Anabaena bharadwajae B.N.Prasad | * ''Anabaena bolochonceviana'' Woronichin | ||
Anabaena bispora Gayral & Mazancourt | * ''Anabaena bolochonzewii'' C.Meyer | ||
Anabaena bolochonceviana Woronichin | * ''Anabaena bonariensis'' Seckt | ||
Anabaena bolochonzewii C.Meyer | * ''Anabaena bornetiana'' Collins | ||
Anabaena bonariensis Seckt | * ''Anabaena broomei'' Batters | ||
Anabaena bornetiana Collins | * ''Anabaena californica'' Borge | ||
Anabaena broomei Batters | * ''Anabaena carmichaelii'' Cronberg & Komárek | ||
Anabaena californica Borge | * ''Anabaena catenula'' Kützing ex Bornet & Flahault | ||
Anabaena carmichaelii Cronberg & Komárek | * ''Anabaena cavanillesiana'' González Guerro | ||
Anabaena catenula Kützing ex Bornet & Flahault | * ''Anabaena circinalis'' var. ''crassa'' Ghose | ||
Anabaena cavanillesiana González Guerro | * ''Anabaena codicola'' Feldmann | ||
Anabaena circinalis var. crassa Ghose | * ''Anabaena confervoides'' Reinsch ex De Toni | ||
Anabaena codicola Feldmann | * ''Anabaena contorta'' Bachmann | ||
Anabaena confervoides Reinsch ex De Toni | * ''Anabaena cupressaphila'' Wolle | ||
Anabaena contorta Bachmann | * ''Anabaena cylindrica'' Lemmermann | ||
Anabaena cupressaphila Wolle | * ''Anabaena cylindrica'' f. ''intermedia'' Elenkin | ||
Anabaena cylindrica Lemmermann | * ''Anabaena cylindrica'' var. ''fertilissima'' Tiwari & R.S.Pandey | ||
Anabaena cylindrica f. intermedia Elenkin | * ''Anabaena cylindrospora'' Tschernov | ||
Anabaena cylindrica var. fertilissima Tiwari & R.S.Pandey | * ''Anabaena delicatissima'' N.L.Gardner | ||
Anabaena cylindrospora Tschernov | * ''Anabaena delicatula'' var. ''robusta'' Eberly | ||
Anabaena delicatissima N.L.Gardner | * '''Anabaena discoidea''' (Schmidle) Ostenfeld | ||
Anabaena delicatula var. robusta Eberly | * ''Anabaena duplooyae'' H.Welsh | ||
Anabaena discoidea (Schmidle) Ostenfeld | * ''Anabaena echinospora'' Skuja | ||
Anabaena duplooyae H.Welsh | * ''Anabaena echinospora'' var. ''yamano'' S.A.Guarrera & R.O.Echenique | ||
Anabaena echinospora Skuja | * ''Anabaena elegans'' Sant’Anna | ||
Anabaena echinospora var. yamano S.A.Guarrera & R.O.Echenique | * ''Anabaena ellipsoidea'' (Compère) Komárek | ||
Anabaena elegans Sant’Anna | * ''Anabaena elliptica'' Lemmermann | ||
Anabaena ellipsoidea (Compère) Komárek | * ''Anabaena elongata'' Prescott | ||
Anabaena elliptica Lemmermann | * Anabaena epiphytica N.L.Gardner | ||
Anabaena elongata Prescott | * Anabaena epiphytica Huber-Pestalozzi | ||
Anabaena epiphytica N.L.Gardner | * Anabaena felisii Bornet & Flahault | ||
Anabaena epiphytica Huber-Pestalozzi | * Anabaena flosaquae f. spiroides Woronichin | ||
Anabaena felisii Bornet & Flahault | * Anabaena flosaquae f. intermedia (Woronichin) Elenkin | ||
Anabaena flosaquae f. spiroides Woronichin | * Anabaena flosaquae f. minor (West) Elenkin | ||
Anabaena flosaquae f. intermedia (Woronichin) Elenkin | * Anabaena flosaquae f. gracilis (Kleban) Elenkin | ||
Anabaena flosaquae f. minor (West) Elenkin | * Anabaena fullebornii Schmidle | ||
Anabaena flosaquae f. gracilis (Kleban) Elenkin | * Anabaena fuscovaginata Mares | ||
Anabaena fullebornii Schmidle | * Anabaena galpinii Claassen | ||
Anabaena fuscovaginata Mares | * Anabaena geitleri De Toni | ||
Anabaena galpinii Claassen | * Anabaena gerdii E.J.Carpenter & Janson | ||
Anabaena geitleri De Toni | * Anabaena ghosei H.Welsh | ||
Anabaena gerdii E.J.Carpenter & Janson | * Anabaena glauca Schmidle | ||
Anabaena ghosei H.Welsh | * Anabaena gracilis Messikommer | ||
Anabaena glauca Schmidle | * Anabaena gregaria Zakrzewski | ||
Anabaena gracilis Messikommer | * Anabaena gregaria f. rotundata Zakrzewski | ||
Anabaena gregaria Zakrzewski | * Anabaena gregaria f. oblongata Zakrzewski | ||
Anabaena gregaria f. rotundata Zakrzewski | * Anabaena groenlandica Bachmann | ||
Anabaena gregaria f. oblongata Zakrzewski | * Anabaena hatueyi Komárek | ||
Anabaena groenlandica Bachmann | * Anabaena hieronymii Lemmermann | ||
Anabaena hatueyi Komárek | * Anabaena hispida Gayral | ||
Anabaena hieronymii Lemmermann | * Anabaena hollerbachii Obukhova [Obuchova] | ||
Anabaena hispida Gayral | * Anabaena huberi De Toni | ||
Anabaena hollerbachii Obukhova [Obuchova] | * Anabaena humicola Bortels | ||
Anabaena huberi De Toni | * Anabaena hunanensis C.-C.Jao | ||
Anabaena humicola Bortels | * Anabaena hyalina Schmidle | ||
Anabaena hunanensis C.-C.Jao | * Anabaena impalpabilis Bory ex Bornet & Flahault | ||
Anabaena hyalina Schmidle | * Anabaena inaequalis Bornet & Flahault | ||
Anabaena impalpabilis Bory ex Bornet & Flahault | * Anabaena incerta P.J.L.Dangeard | ||
Anabaena inaequalis Bornet & Flahault | * Anabaena incognita H.Welsh | ||
Anabaena incerta P.J.L.Dangeard | * Anabaena indica Tiwari & Pandey | ||
Anabaena incognita H.Welsh | * Anabaena indica Zeller ex Bornet & Flahault | ||
Anabaena indica Tiwari & Pandey | * Anabaena irregularis I.F.Lewis, C.Zirkle & R.Patrick | ||
Anabaena indica Zeller ex Bornet & Flahault | * Anabaena iyengari Bharadwaja | ||
Anabaena irregularis I.F.Lewis, C.Zirkle & R.Patrick | * Anabaena iyengari var. attenuata C.B.Rao | ||
Anabaena iyengari Bharadwaja | * Anabaena jeejiae Komárek | ||
Anabaena iyengari var. attenuata C.B.Rao | * Anabaena jonssonii J.B.Petersen | ||
Anabaena jeejiae Komárek | * Anabaena karakumica Kogan | ||
Anabaena jonssonii J.B.Petersen | * Anabaena kisselevii Proshkina-Lavrenko | ||
Anabaena karakumica Kogan | * Anabaena kwangtungensis S.-H.Ley | ||
Anabaena kisselevii Proshkina-Lavrenko | * Anabaena lapponica Borge | ||
Anabaena kwangtungensis S.-H.Ley | * Anabaena lapponica f. insignis Kossinska [Kossinskaya] | ||
Anabaena lapponica Borge | * Anabaena laxa A.Braun | ||
Anabaena lapponica f. insignis Kossinska [Kossinskaya] | * Anabaena laxa var. hortensis Playfair | ||
Anabaena laxa A.Braun | * Anabaena leonardii Compère | ||
Anabaena laxa var. hortensis Playfair | * Anabaena levanderi Lemmermann | ||
Anabaena leonardii Compère | * Anabaena lohammarii Skuja | ||
Anabaena levanderi Lemmermann | * Anabaena luteola Schmidle | ||
Anabaena lohammarii Skuja | * Anabaena macrospora var. gracilis Lemmermann | ||
Anabaena luteola Schmidle | * Anabaena macrospora var. robusta Lemmermann | ||
Anabaena macrospora var. gracilis Lemmermann | * Anabaena macrospora f. crassa (Klebahn) Elenkin | ||
Anabaena macrospora var. robusta Lemmermann | * Anabaena manchurica Skvortzov | ||
Anabaena macrospora f. crassa (Klebahn) Elenkin | * Anabaena marina N.L.Gardner | ||
Anabaena manchurica Skvortzov | * Anabaena marklei J.Copeland | ||
Anabaena marina N.L.Gardner | * Anabaena mediocris N.L.Gardner | ||
Anabaena marklei J.Copeland | * Anabaena mehrai Vasishta | ||
Anabaena mediocris N.L.Gardner | * Anabaena mesiana Claassen | ||
Anabaena mehrai Vasishta | * Anabaena minderi Huber-Pestalozzi | ||
Anabaena mesiana Claassen | * Anabaena miniata Skuja | ||
Anabaena minderi Huber-Pestalozzi | * Anabaena minima Chernov [Tschernov] | ||
Anabaena miniata Skuja | * Anabaena minuta Borzì | ||
Anabaena minima Chernov [Tschernov] | * Anabaena minuta H.Welsh | ||
Anabaena minuta Borzì | * Anabaena minutissima var. australis Skuja | ||
Anabaena minuta H.Welsh | * Anabaena minutissima var. attenuata Pridmore & C.S.Reynolds | ||
Anabaena minutissima var. australis Skuja | * Anabaena minutissima Lemmermann | ||
Anabaena minutissima var. attenuata Pridmore & C.S.Reynolds | * Anabaena monilifera Frémy | ||
Anabaena minutissima Lemmermann | * Anabaena multispora P.J.L.Dangeard | ||
Anabaena monilifera Frémy | * Anabaena nodularioides Geitler & Ruttner | ||
Anabaena multispora P.J.L.Dangeard | * Anabaena novizelandica Skuja | ||
Anabaena nodularioides Geitler & Ruttner | * Anabaena oblonga De Wildeman | ||
Anabaena novizelandica Skuja | * Anabaena orientalis S.C.Dixit | ||
Anabaena oblonga De Wildeman | * Anabaena orientalis var. ellipsospora (C.B.Rao) Desikachary | ||
Anabaena orientalis S.C.Dixit | * Anabaena orthogona West | ||
Anabaena orientalis var. ellipsospora (C.B.Rao) Desikachary | * Anabaena oscillarioides Bory ex Bornet & Flahault — [[типовой вид]] рода | ||
Anabaena orthogona West | * Anabaena oscillarioides f. circinalis Playfair | ||
Anabaena oscillarioides Bory ex Bornet & | * Anabaena oscillarioides f. torulosa Playfair | ||
Anabaena oscillarioides f. circinalis Playfair | * Anabaena oscillarioides var. crassa Playfair | ||
Anabaena oscillarioides f. torulosa Playfair | * Anabaena oscillarioides var. stenospora Bornet & Flahault | ||
Anabaena oscillarioides var. crassa Playfair | * Anabaena oscillarioides var. angusta Bharadwaja | ||
Anabaena oscillarioides var. stenospora Bornet & Flahault | * Anabaena oscillarioides var. angustus Bharadwaja | ||
Anabaena oscillarioides var. angusta Bharadwaja | * Anabaena oscillarioides var. nova-zelandiae Lemmermann | ||
Anabaena oscillarioides var. angustus Bharadwaja | * Anabaena oscillarioides f. elliptica (Kisselev) Elenkin | ||
Anabaena oscillarioides var. nova-zelandiae Lemmermann | * Anabaena papillosa Hirano | ||
Anabaena oscillarioides f. elliptica (Kisselev) Elenkin | * Anabaena paulseniana J.B.Petersen | ||
Anabaena papillosa Hirano | * Anabaena perturbata H.Hill | ||
Anabaena paulseniana J.B.Petersen | * Anabaena pintoi González Guerrero | ||
Anabaena perturbata H.Hill | * Anabaena pirinica Petkoff | ||
Anabaena pintoi González Guerrero | * Anabaena poulseniana J.B.Petersen | ||
Anabaena pirinica Petkoff | * Anabaena promecespora Frémy | ||
Anabaena poulseniana J.B.Petersen | * Anabaena pseudocatenula Claassen | ||
Anabaena promecespora Frémy | * Anabaena pseudoconstricta Cholnoky | ||
Anabaena pseudocatenula Claassen | * Anabaena ramakaranae Bharadwaja | ||
Anabaena pseudoconstricta Cholnoky | * Anabaena raytonensis Cholnoky | ||
Anabaena ramakaranae Bharadwaja | * Anabaena recta Geitler & Ruttner | ||
Anabaena raytonensis Cholnoky | * Anabaena repens Behre | ||
Anabaena recta Geitler & Ruttner | * Anabaena robusta Kogan & Yazkuleva [Jazkulijeva] | ||
Anabaena repens Behre | * Anabaena saaremaaensis Skuja | ||
Anabaena robusta Kogan & Yazkuleva [Jazkulijeva] | * Anabaena salina Alten | ||
Anabaena saaremaaensis Skuja | * Anabaena salina Liebetanz | ||
Anabaena salina Alten | * Anabaena schauderi H.Welsh | ||
Anabaena salina Liebetanz | * Anabaena scheremetieviae f. rotundispora Elenkin | ||
Anabaena schauderi H.Welsh | * Anabaena scheremetievii var. ifniensis P.González | ||
Anabaena scheremetieviae f. rotundispora Elenkin | * Anabaena scheremetievii f. ovalispora Elenkin | ||
Anabaena scheremetievii var. ifniensis P.González | * Anabaena scheremetievii var. incurvata Elenkin | ||
Anabaena scheremetievii f. ovalispora Elenkin | * Anabaena scheremetievii f. ovalispora Schorbat | ||
Anabaena scheremetievii var. incurvata Elenkin | * Anabaena sedovii Kosinskaya | ||
Anabaena scheremetievii f. ovalispora Schorbat | * Anabaena shankargarhii A.K.Varma | ||
Anabaena sedovii Kosinskaya | * Anabaena shensiensis C.-C.Jao | ||
Anabaena shankargarhii A.K.Varma | * Anabaena solicola Kondrateva | ||
Anabaena shensiensis C.-C.Jao | * Anabaena solitaria f. tenuis (Woronichin) Elenkin | ||
Anabaena solicola Kondrateva | * Anabaena sphaerica Bornet & Flahault | ||
Anabaena solitaria f. tenuis (Woronichin) Elenkin | * Anabaena sphaerica f. major J.A.Rino | ||
Anabaena sphaerica Bornet & Flahault | * Anabaena sphaerica var. tenuis G.S.West | ||
Anabaena sphaerica f. major J.A.Rino | * Anabaena sphaerica var. attenuata Bharadwaja | ||
Anabaena sphaerica var. tenuis G.S.West | * Anabaena sphaerica f. tenuis G.S.West | ||
Anabaena sphaerica var. attenuata Bharadwaja | * Anabaena sphaerica f. microsperma (Schmidle) Kossinskaja | ||
Anabaena sphaerica f. tenuis G.S.West | * Anabaena sphagnicola Tarnavschi & Mitroiu | ||
Anabaena sphaerica f. microsperma (Schmidle) Kossinskaja | * Anabaena spinosa Laloraya & Mitra | ||
Anabaena sphagnicola Tarnavschi & Mitroiu | * Anabaena spiroides f. africana (Nygaard) Pankow | ||
Anabaena spinosa Laloraya & Mitra | * Anabaena spiroides f. minima (Nygaard) Kossinskaja | ||
Anabaena spiroides f. africana (Nygaard) Pankow | * Anabaena spiroides f. woronichiniana Elenkin | ||
Anabaena spiroides f. minima (Nygaard) Kossinskaja | * Anabaena spiroides var. contracta Klebahn | ||
Anabaena spiroides f. woronichiniana Elenkin | * Anabaena spiroides var. talyschensis Woronichin | ||
Anabaena spiroides var. contracta Klebahn | * Anabaena subdelicatula C.-C.Jao | ||
Anabaena spiroides var. talyschensis Woronichin | * Anabaena subvariabilis R.E.M.Archibald | ||
Anabaena subdelicatula C.-C.Jao | * Anabaena tatarica Kossinskaja | ||
Anabaena subvariabilis R.E.M.Archibald | * Anabaena tenuis Messikommer | ||
Anabaena tatarica Kossinskaja | * Anabaena thermalis var. indica F.E.Fritsch | ||
Anabaena tenuis Messikommer | * Anabaena thermophila G.H.Schwabe | ||
Anabaena thermalis var. indica F.E.Fritsch | * Anabaena toruloides C.G.M.Archibald | ||
Anabaena thermophila G.H.Schwabe | * Anabaena torulosa Lagerheim ex Bornet & Flahault | ||
Anabaena toruloides C.G.M.Archibald | * Anabaena torulosa var. tenuis (Lemmermann) Geitler | ||
Anabaena torulosa Lagerheim ex Bornet & Flahault | * Anabaena torulosa var. stenospora Bornet & Flahault | ||
Anabaena torulosa var. tenuis (Lemmermann) Geitler | * Anabaena torulosa var. cylindracea (Playfair) Geitler | ||
Anabaena torulosa var. stenospora Bornet & Flahault | * Anabaena tschujskaja Obukhova | ||
Anabaena torulosa var. cylindracea (Playfair) Geitler | * Anabaena tsugarensis M.Watanabe | ||
Anabaena tschujskaja Obukhova | * Anabaena turkestanica (Kiselev) Komárek | ||
Anabaena tsugarensis M.Watanabe | * Anabaena tuzsonii Halász | ||
Anabaena turkestanica (Kiselev) Komárek | * Anabaena variabilis var. cylindracea Playfair | ||
Anabaena tuzsonii Halász | * Anabaena variabilis var. vietnamensis T.N.H.Phung, Couté & P.Bourrelly | ||
Anabaena variabilis var. cylindracea Playfair | * Anabaena vaucheriae C.-C.Jao | ||
Anabaena variabilis var. vietnamensis T.N.H.Phung, Couté & P.Bourrelly | * Anabaena verrucosa J.B.Petersen | ||
Anabaena vaucheriae C.-C.Jao | * Anabaena volzii f. gelatinosa P.Bourrelly & Couté | ||
Anabaena verrucosa J.B.Petersen | * Anabaena werneri Brunnthaler | ||
Anabaena volzii f. gelatinosa P.Bourrelly & Couté | * Anabaena westii Virieux | ||
Anabaena werneri Brunnthaler | * Anabaena willei N.L.Gardner | ||
Anabaena westii Virieux | * Anabaena wisconsinensis Prescott | ||
Anabaena willei N.L.Gardner | * Anabaena woodii G.De Toni | ||
Anabaena wisconsinensis Prescott | |||
Anabaena woodii G.De Toni | |||
|Genome Structure=The genome of the circular chromosome of the PCC 7120 strain of Anabaena has been sequenced. It contains 1 chromosome with 6,413,771 base pairs with 5,368 predicted protein-coding regions, and six plasmids ranging from 408,101 base pairs to 5,584 base pairs. The sequencing of the anabaena genome will aid researchers in studying the genetics and physiology of cellular differentiation, (as exhibited in the heterocycsts of Anabaena) pattern formation, and nitrogen fixation. | |Genome Structure=The genome of the circular chromosome of the PCC 7120 strain of Anabaena has been sequenced. It contains 1 chromosome with 6,413,771 base pairs with 5,368 predicted protein-coding regions, and six plasmids ranging from 408,101 base pairs to 5,584 base pairs. The sequencing of the anabaena genome will aid researchers in studying the genetics and physiology of cellular differentiation, (as exhibited in the heterocycsts of Anabaena) pattern formation, and nitrogen fixation. | ||
|Cell Structure=During times of low environmental nitrogen, about one cell out of every ten will differentiate into a heterocyst. Heterocysts then supply neighboring cells with fixed nitrogen in return for the products of photosynthesis, that they can no longer perform. This separation of functions is essential because the nitrogen fixing enzyme in heterocysts, nitrogenase, is unstable in the presence of oxygen. | |Cell Structure=During times of low environmental nitrogen, about one cell out of every ten will differentiate into a heterocyst. Heterocysts then supply neighboring cells with fixed nitrogen in return for the products of photosynthesis, that they can no longer perform. This separation of functions is essential because the nitrogen fixing enzyme in heterocysts, nitrogenase, is unstable in the presence of oxygen. |
Версия 15:33, 23 сентября 2022
Описание микроба | [[Description::Анабена (Шаблон:Lang-la) — род нитчатых цианобактерий (синезелёных водорослей), входит в состав планктона. Клетки округлые или бочонковидные, имеются гетероцисты. Для анабены характерно наличие специализированных клеток для переживания неблагоприятного периода – акинет. Известны своими азотфиксирующими способностями, образуют симбиотические отношения с определёнными растениями, такими, как некоторые папоротники. Являются одними из четырёх родов цианобактерий, которые производят нейротоксины, наносящими ущерб местной дикой природе, а также сельскохозяйственным и домашним животным.]] |
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Верхний таксон | Bacteria; Cyanobacteria; Nostocales; Nostocaceae; Anabaena |
Species - виды | [[Species::* Anabaena abnormis Proskina-Lavrenko & Makarova
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Genome Structure= структура генома | The genome of the circular chromosome of the PCC 7120 strain of Anabaena has been sequenced. It contains 1 chromosome with 6,413,771 base pairs with 5,368 predicted protein-coding regions, and six plasmids ranging from 408,101 base pairs to 5,584 base pairs. The sequencing of the anabaena genome will aid researchers in studying the genetics and physiology of cellular differentiation, (as exhibited in the heterocycsts of Anabaena) pattern formation, and nitrogen fixation. |
Cell Structure - клеточная структура | During times of low environmental nitrogen, about one cell out of every ten will differentiate into a heterocyst. Heterocysts then supply neighboring cells with fixed nitrogen in return for the products of photosynthesis, that they can no longer perform. This separation of functions is essential because the nitrogen fixing enzyme in heterocysts, nitrogenase, is unstable in the presence of oxygen. |
Ecology= экология обитания | It is commonly accepted that cyanobacteria played a key role in the manufacturing of oxygen during the Precambrian period of earth's history. They perform oxygenic photosynthesis, very similar to that of eukaryotic plants and algae, by utilizing water as a reductant source, consequently producing molecular oxygen. Heterocysts, mentioned above, are terminally differentiated cells that specialize in nitrogen fixation. It is believed that the capacity for developing heterocysts first developed when the concentration of oxygen in the atmosphere (largely produced by cyanobacteria) reached levels high enough to cause the inactivation of the nitrogen-fixing enzyme nitrogenase. |
https://microbewiki.kenyon.edu/index.php/Anabaena