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Position: Home > Articles > Molecular detection of Ustilaginoidea virens in rice plant Acta Phytopathologica Sinica 2016,46 (2) 145-150

Ustilaginoidea virens在自然发病水稻植株体内分布情况的检测

作  者:
郑大伟;张艺美;尹涛;许金荣;王晨芳
单  位:
旱区作物逆境生物学国家重点实验室/西北农林科技大学植物保护学院
关键词:
稻曲病菌;分子检测;体内分布
摘  要:
水稻稻曲病(rice false smut)近年来在我国长江中下游地区和东北地区发生趋于严重,已经上升为水稻生产的主要病害之一,但是关于该病害的侵染方式尚存在争议。本研究以稻曲病菌线粒体核酸序列为检测靶标,建立了一套更加简便快速的PCR检测体系,并通过该检测体系对常发病田内30 d秧龄移栽后35 d的苗期水稻植株以及灌浆期发病植株体内稻曲菌的分布情况进行了检测。研究结果表明,所建立的检测体系具有较好的特异性,灵敏度可达到1 pg水平。对移栽后35 d的苗期样品和灌浆期病株不同组织进行检测发现,在苗期水稻的根和叶鞘组织以及灌浆期发病植株的茎组织中,均可检测到稻曲菌。该结果为稻曲病菌在水稻不同发育时期、不同组织内的分布情况提供了直接的分子证据,并为稻曲病侵染过程的进一步研究以及大田防治策略的制定奠定了基础。
译  名:
Molecular detection of Ustilaginoidea virens in rice plant
作  者:
ZHENG Da-wei;ZHANG Yi-Mei;YIN Tao;XU Jin-rong;WANG Chen-fang;State Key Laboratory of Crop Stress Biology for Arid Areas /College of Plant Protection,Northwest A & F University;Department of Botany and Plant Pathology,Purdue University;
关键词:
Ustilaginoidea virens;;molecular detection;;in planta distribution
摘  要:
Rice false smut has become one of the major diseases in Northeast China and in the areas of the middle and lower reaches of Yangtze River. However,its infection type remains to be controversial. In this study,we constructed a simple and quick approach for the detection of Ustilaginoidea virens and revealed the distribution of U. virens inside different tissues of rice samples in both the seedling stage at 35 days after transplantation and the filling stage. The primers designed from the sequence of U. virens mitochondria showed qualified specificity and sensitivity for 1 pg U. virens DNA. With this detection approach,U. virens was detected in root and sheath tissues in the seedling stage samples and stem tissues in the filling stage samples. The results not only directly offered molecular evidence of the distribution of U. virens in various rice tissues in the seedling and filling stages,but also may be beneficial to develop novel strategies to control rice false smut.

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