ArticleBMC plant biology2025
MYB gene from Endocarpon pusillum regulates growth and development and enhances drought tolerance in creeping bentgrass (Agrostis stolonifera L.).
Article in BMC plant biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundMYB transcription factors play a crucial regulatory role in plant growth and stress response. The gene EpMYB, obtained from Endocarpon pusillum, a dominant lichen in the Tengger Desert, was transferred to creeping bentgrass to explore its effects on plant growth and response to abiotic stress.
resultsCompared to wild-type (WT), transgenic (TG) plants exhibited a faster growth rate, a significantly higher number of leaves per tiller, increased internode length, and longer maximum leaf length. However, some of the leaves were severely twisted. Additionally, the antioxidant enzyme content, lignin content and drought tolerance of the TG plants was significantly enhanced. RNA-seq analysis revealed that differentially expressed genes (DEGs) in the TG-vs-WT were primarily associated with pathways such as photosynthesis, wax biosynthesis, lipid metabolism, and flavonoid biosynthesis. By comparing the TG (Drought treatment)-vs-TG and WT (Drought treatment)-vs-WT groups, numerous DEGs related to growth, development, and stress tolerance were identified, including aldehyde decarbonylase gene(CER1), lignin synthesis gene (HCT), adenylate dimethylallyltransferase gene (IPT), peroxin-10 gene (PEX10), among others. These results suggest that the EpMYB gene enhances the drought tolerance of transgenic creeping bentgrass by regulating photosynthesis, antioxidant enzyme activity, lignin synthesis, wax synthesis, and lipid metabolism.
conclusionThese findings suggest that the EpMYB gene functions as a positive regulator of plant growth and development, while also playing a crucial role in the plant’s response to drought stress. Furthermore, this study demonstrates the feasibility of selecting specific functional genes from stress-tolerant microorganisms and applying them to plants to enhance stress resistance.
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