Kumar A, Singh U S, Singh A, Malik V S, Garg G K
Department of Molecular Biology and Genetic Engineering, G B Pant University of Agricultural & Technology, Pantnagar, India.
Indian J Exp Biol. 2000 Jun;38(6):525-39.
Karnal bunt of wheat, incited by a phytopathogen Tilletia indica (Syn. Neovossia indica) is a floret infecting disease. In the floral tissues fungus proliferates and produces massive amount of black spores. In smut fungi, belonging to order Ustilaginales, communication between cells is necessary to regulate growth, differentiation and monokaryotic to dikaryotic transition during pathogenic and sexual development. Neighbouring cells are able to communicate with each other by direct cell to cell contact through plasma membrane bound signaling molecules or through formation of gap junctions and alternatively through secretion of chemical signals if cells are some distance away. Current research efforts toward understanding of pathogenic and sexual development in phytopathogenic fungi, offer a number of opportunities. These include the analysis of molecular signal(s) for direct contribution of sexual interactions to ability of smut and bunt pathogens to cause disease. These efforts will provide not only to explore the mechanisms of pathogenesis, but also to enhance knowledge of basic cellular biology of an economically important group of fungi.
由植物病原体印度腥黑粉菌（同义词：印度新轴黑粉菌）引起的小麦卡纳尔腥黑穗病是一种侵染小花的病害。在花组织中，真菌大量繁殖并产生大量黑色孢子。在属于黑粉菌目的黑粉菌中，细胞间通讯对于调控致病和有性发育过程中的生长、分化以及单核细胞向双核细胞的转变是必要的。相邻细胞能够通过质膜结合的信号分子进行直接的细胞间接触相互通讯，或者通过形成间隙连接进行通讯，若细胞间有一定距离，则可通过分泌化学信号进行通讯。目前对植物病原真菌致病和有性发育的研究工作提供了许多机会。这些机会包括分析分子信号，以了解有性相互作用对黑粉菌和腥黑粉菌病原体致病能力的直接贡献。这些研究不仅将有助于探索发病机制，还将增进对这一具有经济重要性的真菌类群基本细胞生物学的认识。
