Effects of three Glomus species as biocontrol agents against Verticillium-induced wilt in cotton

• Autorzy: Kobra N , Jalil K. , Youbert G.

Warianty tytułu

PL

Skutecznosc trzech gatunkow Glomus jako czynnikow biologicznego zwalczania werticiliozy na bawelnie

• Języki publikacji: EN

Abstrakty

EN

The objective of this investigation was to study the effects of three Glomus species: G. etunicatum, G. intraradices and G. versiforme on the development of verticillium wilt in cotton plants. Results indicated that the influence of arbuscular mycorrhizal fungi as a biocontrol agents were different among three Glomus species. In diseased cotton plants colonized by G. etunicatum, the disease index was lower than others and also, higher colonization percentage was relevant to these plants. On the other hand, the establishment of mycorrhizal symbiosis and development of structure of AMF were reduced when both symbiotic and pathogenic fungi infected the same root. In addition, the symptoms of veticillium wilt were diminished too. These results revealed that the beneficial effects of mycorrhiza could alleviate the pathogenic effects of V. dahliae and also a competitive interaction existed between these pathogenic and symbiont fungi.

PL

Celem prezentowanych badań była ocena wpływu trzech gatunków Glomus: G. etunicatum, G. intraradices, G. versiforme na rozwój werticilliozy na roślinach bawełny. Wyniki badań wykazały, że skuteczność arbuskularnych grzybów mikoryzowych jako czynników biologicznego zwalczania była różna dla poszczególnych gatunków Glomus. Rośliny bawełny porażone werticilliozą i jed nocześnie zasiedlone przez grzyb G. etunicatum, charakteryzowały się niższym wskaźnikiem choroby, a także wyższym procentem zasiedlenia przez ten gatunek w porównaniu do pozostałych obydwóch gatunków Glomus. Zapoczątkowanie symbiozy mikoryzowej i dalszy rozwój grzybni arbuskularnych grzybów mikoryzowych (AMF) były ograniczone, gdy zarówno symbiotyczne jak i patogeniczne grzyby infekowały ten sam korzeń. Ponadto stwierdzono, że pod wpływem grzybów mikoryzowych nasilenie objawów werticilliozy ulegało zmniejszeniu. Wyniki badań sugerowały korzystny wpływ mikoryzy polegający na łagodzeniu skutków patogeniczności grzyba V. dahliae oraz występowania konkurencyjnej interakcji pomiędzy patogenicznymi i symbiotycznymi grzybami.

Słowa kluczowe

EN

Glomus versiforme; Glomus; Glomus etunicatum; Verticillium dahliae; pathogen; plant disease; wilt disease; fungi; Verticillium; Glomus intraradices; plant protection; resistance; cotton; biological control agent

• Wydawca: -
• Czasopismo: Journal of Plant Protection Research
• Rocznik: 2009
• Tom: 49
• Numer: 2
• Opis fizyczny: p.185-189,fig.,ref.

Twórcy

autor

Kobra N

• Urmia University, Urmia, Iran

autor

Jalil K.

autor

Youbert G.

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