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Updated: Feb 4, 2026

Relating Stomatal Conductance to Leaf Functional Traits
Published on: October 12, 2015
GmPLC8 enhances drought resistance in soybean by regulating stomatal closure
Di Wang1, Mingyu Yang1, Yuhan Liu1
1College of Life Science, Jilin Agricultural University, Changchun, Jilin 130118, China.
None:
Soybean (Glycine max (L.) Merr.) is an economically important crop. Drought adversely affects nutrient acquisition and early vegetative development, thereby constraining the growth potential of soybean seedlings. Phospholipase C (PLC) participates in diverse biological processes, yet its function in soybeans has not been fully explored. In this study, we generated GmPLC8-overexpressing (OE) and GmPLC8-silenced soybean seedlings to investigate the function of GmPLC8. The results showed that GmPLC8-OE lines exhibited higher tolerance than wild-type seedlings, whereas GmPLC8-silenced seedlings were more sensitive. This was associated with reduced malondialdehyde (MDA) and hydrogen peroxide (H2O2) levels in GmPLC8-OE lines, and increased levels in GmPLC8-silenced seedlings. Further analysis revealed that drought caused smaller stomatal apertures and higher abscisic acid (ABA) content in GmPLC8-OE lines. Moreover, the transcription levels of ABA-related genes were upregulated in GmPLC8-OE lines. Taken together, these findings suggest that GmPLC8 enhances drought tolerance in soybean by regulating stomatal aperture.
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