SPEAKER:Aimin Lv Post-Doctor Department of Plant Science, SAB

TIME：12:40-14:00 Oct 20, 2021(Wednesday)

VENUE：Room 104, Building B, School of Agriculture and Biology

ORGANIZER：Office of Discipline and Science & Technology, SAB; Young Teachers Association, SAB

TITTLE:The function and mechanism of LEA protein in alfalfa

ABSTRACT:

Alfalfa (Medicago sativa L.) is an important legume. Alfalfa is mainly cultivated in northern China region, where drought and salt stresses are major problem for alfalfa growth. The nutritional, physiological and molecular mechanisms of alfalfa in response to drought and salinity stress have been the most popular research fields. Al3+ is very phytotoxic and is a major limiting factor for plant growth in acidic soil in the south of China. Late embryogenesis abundant (LEA) proteins were first identified at later stages of embryogenesis. LEA proteins are a family of highly hydrophilic and low molecular mass proteins lack of complex structure. It has been reported to participate in transcriptional control, ion binding, antioxidant activity, membrane and protein stabilization. LEA proteins are regarded as molecular chaperones that protect other proteins against aggregation under abiotic stresses, particularly under water deficit and cold stress. In this talk, we will focus on the function of SK3-type dehydrin MsDHN1. MsDHN1 can increase alfalfa tolerance to Al stress via increasing oxalate secretion from root tips, which may involve in the interaction of MsDHN1 with two aquaporins.