Trichoderma species mediated differential tolerance against biotic stress of phytopathogens in Cicer arietinum L. (10th September 2014)

• Record Type: Journal Article
• Authors: Saxena, Amrita; Raghuwanshi, Richa; Singh, Harikesh Bahadur
• Is Part Of: Journal of basic microbiology. Volume 55:issue 2(2015:Feb.)
• Page Start: 195
• Page End: 206
• Publication Date: 2014-09-10
• Subjects: Microbiology -- Periodicals; 579
• DOI: 10.1002/jobm.201400317
• Languages: English
• ISSNs: 0233-111X

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="jobm201400317-sec-0001" sec-type="section"> <p> <italic>Trichoderma</italic> spp. have been reported to aid in imparting biotic as well as abiotic tolerance to plants. However, there are only few reports unfolding the differential ability of separate species of <italic>Trichoderma</italic> genera generally exploited for their biocontrol potential in this framework. A study was undertaken to evaluate the biocontrol potential of different <italic>Trichoderma</italic> species namely <italic>T. harzianum</italic>, <italic>T. asperellum</italic>, <italic>T. koningiopsis</italic>, <italic>T. longibrachiatum</italic>, and <italic>T. aureoviride</italic> as identified in the group of indigenous isolates from the agricultural soils of Eastern Uttar Pradesh, India. Their biocontrol potential against three major soilborne phytopathogens, i.e., <italic>Sclerotium rolfsii</italic>, <italic>Sclerotinia sclerotiorum</italic>, and <italic>Colletotrichum capsici</italic> was confirmed by dual culture plate technique. Efficient mycoparasitic ability was further assessed in all the isolates in relation to chitinase, β‐1, 3 glucanase, pectinase, lipase, amylase, and cellulase production while equally consistent results were obtained for their probable phosphate solubilization and indole acetic acid (IAA) production abilities. The selected isolates were further subjected to test their ability to promote plant growth, to reduce disease incidence and to tolerate biotic stress in terms of lignification pattern against <italic>S. rolfsii</italic> in chickpea plants. Among the identified <italic>Trichoderma</italic> species, excellent results were observed for <italic>T. harzianum</italic> and <italic>T. koningiopsis</italic> indicating better biocontrol potential of these species in the group and thus exhibiting perspective for their commercial exploitation.</p> </sec> </abstract>