Gan Lu, Yin Yuelan, Niu Qichen, Yan Xuebing, Yin Shuxia
College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China.
Institute of Turfgrass Science, Beijing Forestry University, Beijing 100107, China.
J Fungi (Basel). 2022 Nov 10;8(11):1186. doi: 10.3390/jof8111186.
is internationally recognized as a biocontrol fungus for its broad-spectrum antimicrobial activity. Intriguingly, the crosstalk mechanism between the plant and is dynamic, depending on the strains and the plant species. In our previous study, the 192-45 strain showed better pathogen inhibition through the secretive non-volatile and volatile substrates. Therefore, we studied transcriptional and metabolic responses altered in creeping bentgrass ( L.) with colonization prior to a challenge with . This fungal pathogen causes dollar spot on various turfgrasses. When the pathogen is deficient, the importance of to the enhancement of plant growth can be seen in hormonal production and microbe signaling, such as indole-3-acrylic acid. Therefore, these substrates secreted by and induced genes related to plant growth can be the 'pre-defense' for ensuing pathogen attacks. During infection, the -plant interaction activates defense responses through the SA- and/or JA-dependent pathway, induced by and its respective exudates, such as oleic, citric, and stearic acid. Thus, we will anticipate a combination of genetic engineering and exogenous application targeting these genes and metabolites, which could make creeping bentgrass more resistant to dollar spot and other pathogens.
因其广谱抗菌活性而被国际公认为一种生物防治真菌。有趣的是，植物与该真菌之间的相互作用机制是动态的，这取决于该真菌的菌株和植物种类。在我们之前的研究中，192 - 45菌株通过分泌非挥发性和挥发性底物表现出更好的病原菌抑制作用。因此，我们研究了在受到病原菌挑战之前，匍匐翦股颖（匍匐翦股颖）被该真菌定殖后其转录和代谢反应的变化。这种真菌病原菌会在各种草坪草上引起币斑病。当病原菌缺失时，该真菌对植物生长促进作用的重要性可以在激素产生和微生物信号传导中体现出来，比如吲哚 - 3 - 丙烯酸。因此，该真菌分泌的这些底物以及诱导的与植物生长相关的基因可以作为对随后病原菌攻击的“预防御”。在病原菌感染期间，该真菌与植物的相互作用通过水杨酸（SA）和/或茉莉酸（JA）依赖的途径激活防御反应，这些途径由该真菌及其各自的分泌物（如油酸、柠檬酸和硬脂酸）诱导。因此，我们预期针对这些基因和代谢物的基因工程和外源应用相结合，这可以使匍匐翦股颖对币斑病和其他病原菌更具抗性。
