کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8352539 | 1541891 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mutualistic fungus Phomopsis liquidambari increases root aerenchyma formation through auxin-mediated ethylene accumulation in rice (Oryza sativa L.)
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کلمات کلیدی
ACCABAPCIBCTKAOAORPIndole-3-acetic acid (IAA)IAAPCDACSAerenchymaPORACO1-aminocyclopropanecarboxylic acid - 1-آمینوسیکلپروپانکربنیک اسیدACC oxidase - ACC اکسیدازACC synthase - ACC سنتازEthylene - اتیلنaminooxyacetic acid - اسید aminooxyaceticindole-3-acetic acid - اسید Indole-3-استیکabscisic acid - اسید آبسزیکFungal endophyte - اندوفیت قارچیRice - برنجRoot porosity - تخلخل ریشهROL - رولadventitious root - ریشه تصادفیcytokinin - سیتوکینینRadial oxygen loss - ضربان اکسیژن رادیالProgrammed cell death - مرگ برنامهریزی شده یاختهNitrogen - نیتروژنhigh nitrogen - نیتروژن بالاlow nitrogen - نیتروژن کمfresh weight - وزن ترoxidation-reduction potential - پتانسیل کاهش اکسیداسیون
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The fungal endophyte Phomopsis liquidambari can improve nitrification rates and alter the abundance and composition of ammonia-oxidizers in the soil rhizosphere of rice. Aerenchyma is related to oxygen transport efficiency and contributes to the enhanced rhizospheric nitrification under flooding conditions. However, whether and how P. liquidambari affects aerenchyma formation is largely unknown. We therefore conducted pot and hydroponic experiments to investigate the changes of aerenchyma area, ethylene and indole-3-acetic acid (IAA) levels in rice with or without P. liquidambari infection. Our results showed that the larger aerenchyma area in rice roots with P. liquidambari inoculation was associated with markedly up-regulated expression of genes related to aerenchyma formation. Meanwhile, P. liquidambari inoculation substantially elevated root porosity (POR) and radial oxygen loss (ROL), leading to the enhancement of oxidation-reduction potential (ORP) under pot condition. Besides, P. liquidambari significantly increased IAA and ethylene levels in rice by stimulating the expression of genes involved in auxin and ethylene biosyntheses. Furthermore, auxin that partly acting upstream of ethylene signalling played an essential role in P. liquidambari-promoted aerenchyma formation. These results verified the direct contribution of P. liquidambari in promoting aerenchyma formation via the accumulation of IAA and ethylene in rice roots, which provides a constructive suggestion for improving hypoxia tolerance through plant-endophyte interactions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Plant Physiology and Biochemistry - Volume 130, September 2018, Pages 367-376
Journal: Plant Physiology and Biochemistry - Volume 130, September 2018, Pages 367-376
نویسندگان
Li-Yan Hu, Dan Li, Kai Sun, Wei Cao, Wan-Qiu Fu, Wei Zhang, Chuan-Chao Dai,