Nodule utachiona - symbiotic zvipenyu kugadzira senitrogen

Nodule utachiona vari tusingaoneki kuti ndezvaJehovha genus Rhizobium (kubva pashoko rechiGiriki rokuti -. "Kurarama pasi nemidzi"). Vari chakaunzwa mudzi mamiriro miriwo uye imomo. Panguva iyoyo vakanga vasiri tupukanana, t. To. Kwete chete utachiona asiwo mumiririri nemiti vakabatsirwa. Kwakadaro Kuvapo kungoreva kunobatsira kuti zvinenge anonzi symbiosis. Muchiitiko chino, zvimwe zvirimwa anobudiswa neZvapupu mumhepo senitrogen iyo "hove" ari zvigare uye utachiona pachavo - makabhohaidhiretsi uye zvicherwa. Vamwe vanhu vanodavira kuti prokaryotes ava vakagara kumidzi vamiririri chete legume mhuri, asi hazvisi. Pane zvimwe zvirimwa vane midzi zvinopa dzinogarisana nodule prokaryotes - zvakadai alder, rutsanga dondo uye zvichingodaro ..

Nokuti zvinenge Rhizobium genus kunoratidzwa polymorphism, semuna. E mhando utachiona vari siyana chaizvo. tusingaoneki izvi zvingava chinjwa uye mira, vane chimiro neshinda yakaiswa ruvara kana bacillus, filamentary, denderedzwa. In vakawanda vechiduku prokaryotes vari tsvimbo serin'i, izvo pamwe kuwedzera zera uye dzinosiyana nokuda kuunganidza zvinovaka muviri uye immobilization. In kwayo upenyu kutenderera muviri anoenda mumatanho akawanda, izvo zvinogona vachatongwa kwayo chitarisiko. Pakutanga izvi chimiro tsotso, ipapo vanonzi "belted tsotso" (ane mabhandi mafuta inclusions) uye pakupedzisira bakteriod - sero yatarwa irregularly zvakaumbwa guru.

Nodule utachiona dzakananga, kureva. E., Ivo vanogona kugadzirisa chete rimwe boka kana mhando chirimwa. pfuma iyi zvigare zvinoberekeswa kuumbwa. Uyewo chinokosha kubudirira - kukwanisa kuunganidza mumhepo senitrogen yakakwana kwazvo nokuda nehondo dzavo chirimwa. pfuma iyi haisi kugara uye dzinosiyana nokuda dzezvakatipoteredza ezvinhu.

Zvisinei, About sei nodule utachiona kupinda mudzi, hapana Kubvumirana, pane vakawanda hypotheses pamusoro mashandiro kuti kupinda kwavo. Somuenzaniso, mamwe masayendisiti anodavira kuti prokaryotes vari chakaunzwa mudzi kuburikidza dzayo kukuvara rinenge vamwewo vanoti pamusoro kupinda kubudikidza mudzi vhudzi. Pane chinhu auxin pfungwa - nokufungidzira kuti Satellite masero, izvo kubatsira utachiona kuti chakaunzwa mudzi masero.

The chaizvo chete muchibereko kunoitika muna maitikiro zviviri: chokutanga - chirwere pamudzi vhudzi, uye ipapo - paumbwe nodules. Ya Pasika vakasiyana uye kunoenderana mhando chirimwa.

Meaning of mabhakitiriya izvo vanokwanisa kugadzira senitrogen, yakakura nokuda zvokurima, t. K. Utachiona uhwu anogona kunonatsiridza yauinayo. Kubva tusingaoneki izvi kwemabhakitiriya fetiraiza rinogadzirirwa, iyo inoshandiswa kurapa mbeu kubva leguminous inosimudzira nokukurumidza utachiona midzi. Mhando dzakasiyana-siyana dzemhuri papilionaceous kumhara kunyange murombo nevhu regai zvinoda okuwedzera senitrogen fetiraiza. Saka, 1 hectare yebhinzi "mu" pamwe rhizobia mugore rinoshandurwa kupinda akasungwa mamiriro 100-400 makirogiramu ose senitrogen.

Saka, nodule utachiona - symbiotic Utachiona, izvo zvinokosha zvikuru muupenyu chirimwa, asi vo kwete chete senitrogen kunoita zvakasikwa.