tailieunhanh - Mechanisms of the IAA and ACCdeaminase producing strain of Trichoderma longibrachiatum T6 in enhancing wheat seedling tolerance to NaCl stress

Trichoderma species, a class of plant beneficial fungi, may provide opportunistic symbionts to induce plant tolerance to abiotic stresses. Here, we determined the possible mechanisms responsible for the indole acetic acid (IAA) and 1-aminocyclopropane-1-carboxylate-deaminase (ACC-deaminase) producing strain of Trichoderma longibrachiatum T6 (TL-6) in promoting wheat (Triticum aestivum L.) growth and enhancing plant tolerance to NaCl stress. | Nội dung Text Mechanisms of the IAA and ACCdeaminase producing strain of Trichoderma longibrachiatum T6 in enhancing wheat seedling tolerance to NaCl stress .den color inherit .ttnd ol .ttnd ul .ttnd dl padding 0 0px 0 20px .ttnd hr margin 10px 0px .ttnd a href javascript void 0 .ttnd a href color inherit dtextscript p text-align left dtextscript img vertical-align middle Zhang et al. BMC Plant Biology 2019 19 22 lt br gt https s12870-018-1618-5 lt br gt lt br gt lt br gt lt br gt lt br gt RESEARCH ARTICLE Open Access lt br gt lt br gt Mechanisms of the IAA and ACC- lt br gt deaminase producing strain of Trichoderma lt br gt longibrachiatum T6 in enhancing wheat lt br gt seedling tolerance to NaCl stress lt br gt Shuwu Zhang1 Yantai Gan2 and Bingliang Xu1 lt br gt lt br gt lt br gt Abstract lt br gt Background Trichoderma species a class of plant beneficial fungi may provide opportunistic symbionts to induce lt br gt plant tolerance to abiotic stresses. Here we determined the possible mechanisms responsible for the indole acetic acid lt br gt IAA and 1-aminocyclopropane-1-carboxylate-deaminase ACC-deaminase producing strain of Trichoderma lt br gt longibrachiatum T6 TL-6 in promoting wheat Triticum aestivum L. growth and enhancing plant tolerance to NaCl stress. lt br gt Results Wheat treated with or without TL-6 was grown under different levels of salt stress in controlled environmental lt br gt conditions. TL-6 showed a high level of tolerance to 10 mg ml 1 of NaCl stress and the inhibitory effect was more lt br gt pronounced at higher NaCl concentrations. Under NaCl stress the activity of ACC-deaminase and IAA concentration in lt br gt TL-6 were promoted with the activity of ACC-deaminase increased by 26 at the salt concentration of 10 mg ml 1 lt br gt and 31 at 20 mg ml 1 compared with non-saline stress and the concentration of IAA was increased by 10 and 7 lt br gt respectively P lt . The increased ACC-deaminase and IAA concentration in .

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