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Amagciwane lezimpande eziguqula i - eziphilayo iqala ubuhlobo bokubambisana ukuthi igesi ye nitrogen

amagciwane qhuzwana kukhona nezilwanyana ezincane ukuthi singabakaNkulunkulu uhlobo lwe Rhizobium (kusukela igama lesiGreki elisho igama -. "Ukuhlala izimpande"). Basuke busuka uhlelo impande izitshalo bahlale khona. Ngesikhathi esifanayo awayona izimuncagazi, t. Ukuze. Amagciwane Akukhona nje, kodwa futhi omele flora bazuza. khona okunjalo letihlomulisa eziphilayo okuthiwa Symbiosis. Kulokhu, izitshalo okwengeziwe akhiqizwa nitrogen esemkhathini okuyinto "catch" izilokazane ezincane kanye amagciwane ngokwabo - carbohydrate kanye namaminerali. Abanye abantu bakholelwa ukuthi lezi prokaryotes ukuhlala izimpande abameleli kuphela imidumba umndeni, kodwa akuyona. Zikhona nezinye izitshalo kabani izimpande ukunikeza olwenzeka endaweni qhuzwana prokaryotes - ezifana Alder, umhlanga ihlathi nokunye ..

Ukuze eziphilayo Rhizobium bohlobo libhekene polymorphism, isb. E izinhlobo amagciwane zahlukahlukene kakhulu. Lezi nezilwanyana ezincane kungase kube nezinqe umile, babe ukuma nendwangu noma imbewu eletha, filamentary, okweqanda. Ngo prokaryotes lezintokazi kukhona induku eliyindilinga, okuyinto nge okwandisa ngobudala kuyehluka ngenxa ekuqongeleleni umsoco futhi immobilization. Esikhathini sawo sokuphila ukuphila umjikelezo umzimba egcina izigaba eziningana, okungase liyokwahlulelwa ukubukeka kwayo. Ekuqaleni lo mumo izinti ke okuthiwa "izinti belted" (has amabhande nge inclusions amafutha) kanye ekugcineni bakteriod - ezimise irregularly esitokisini esikhulu esinqunyiwe.

amagciwane qhuzwana acace, isb. E., Bayakwazi axazulule kuphela iqembu elithize noma uhlobo isitshalo. Lokhu impahla nezilwanyana ezincane zofuzo kwakhiwa. Lokunye lokubaluleke kakhulu ukusebenza - ikhono buthelela nitrogen esemkhathini eziningi ezanele ukuze ibandla lazo isitshalo. Le mpahla akuyona njalo futhi ingahluka ngenxa yezimo kwemvelo.

Nokho, cishe ukuthi amagciwane lezimpande eziguqula i faka impande, kungekho ukuvumelana, kukhona eziningi imicabango mayelana mshini Ukungena yabo. Ngokwesibonelo, abanye ososayensi bakholelwa ukuthi prokaryotes yethulwe zingene impande ngokusebenzisa umonakalo yayo izicubu, kanti abanye bathi mayelana Ukungena ngokusebenzisa izinwele impande. Kukhona umbono auxin - ngoba kucatshangwa ukuthi amaseli satellite, ezisiza amabhaktheriya ukuba busuka amaseli impande.

I yenzeka kakhulu efanayo kwenzeka ngezigaba ezimbili: okokuqala - isifo impande izinwele, bese - kumiswa ngamaqhubu. Isikhathi esigabeni ihlukile futhi kuncike uhlobo isitshalo.

Meaning of amagciwane ekwazi ukugcina igesi ye nitrogen, likhulu wezolimo, t. K. La magciwane kungaba ngcono ukukhiqiza. Kusukela alawa magciwane Umanyolo webhaktheriya ibhalwe, esetshenziselwa imbewu ukwelashwa leguminous okukhuthaza izimpande ngokushesha elinegciwane. Imihlobo ehlukeneko umndeni papilionaceous kokwehla ngisho nenhlabathi abampofu angadingi ezengeziwe nitrogen umquba. Ngakho, 1 ehektheleni ubhontshisi "e" ne rhizobia phakathi nonyaka ihumusha kusimo eholela 100-400 kg nitrogen.

Ngakho, ama-bacterium lezimpande eziguqula i - eziphilayo iqala ubuhlobo bokubambisana, okuyinto abaluleke kakhulu hhayi kuphela empilweni zalesi sihlahla, kodwa futhi Umjikelezo we-nitrogen ngokwemvelo.

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