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Your search keyword '"Zhu, Xiaofeng"' showing total 11 results
Start Over Author "Zhu, Xiaofeng" Journal international journal of molecular sciences
11 results on '"Zhu, Xiaofeng"'

11. Modulation of (Homo)Glutathione Metabolism and H 2 O 2 Accumulation during Soybean Cyst Nematode Infections in Susceptible and Resistant Soybean Cultivars.

Author

Chen X, Li S, Zhao X, Zhu X, Wang Y, Xuan Y, Liu X, Fan H, Chen L, and Duan Y

Subjects
Animals, Genotype, Glutathione metabolism, Hydrogen Peroxide metabolism, Nematode Infections metabolism, Nematode Infections parasitology, Plant Diseases genetics, Plant Diseases parasitology, Reactive Oxygen Species metabolism, Glycine max growth & development, Glycine max parasitology, Disease Resistance genetics, Glutathione genetics, Nematode Infections genetics, Glycine max genetics
Abstract

In plant immune responses, reactive oxygen species (ROS) act as signaling molecules that activate defense pathways against pathogens, especially following resistance (R) gene-mediated pathogen recognition. Glutathione (GSH), an antioxidant and redox regulator, participates in the removal of hydrogen peroxide (H 2 O 2 ). However, the mechanism of GSH-mediated H 2 O 2 generation in soybeans ( Glycine max (L.) Merr.) that are resistant to the soybean cyst nematode (SCN; Heterodera glycines Ichinohe) remains unclear. To elucidate this underlying relationship, the feeding of race 3 of H. glycines with resistant cultivars, Peking and PI88788, was compared with that on a susceptible soybean cultivar, Williams 82. After 5, 10, and 15 days of SCN infection, we quantified γ-glutamylcysteine (γ-EC) and (homo)glutathione ((h)GSH), and a gene expression analysis showed that GSH metabolism in resistant cultivars differed from that in susceptible soybean roots. ROS accumulation was examined both in resistant and susceptible roots upon SCN infection. The time of intense ROS generation was related to the differences of resistance mechanisms in Peking and PI88788. ROS accumulation that was caused by the (h)GSH depletion-arrested nematode development in susceptible Williams 82. These results suggest that (h)GSH metabolism in resistant soybeans plays a key role in the regulation of ROS-generated signals, leading to resistance against nematodes.

Published
2020
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