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Crop Biotech Update

Research Pinpoints GDSL Esterase/Lipase Protein Vital for Anther and Pollen Development

September 16, 2020

A rice GDSL esterase/lipase protein (GELP) is necessary for anther and pollen development, Molecular Breeding journal reports.

Sichuan Agricultural University researchers isolated a male-sterile mutant osgelp34-1 in rice to understand the linkage of male reproductive development and crop seed production. Cell structure analysis revealed that the mutant had delayed degradation of anther wall layers and abnormal pollen development, which led to the production of shrunk and non-viable pollen grains. Furthermore, genetic mapping and CRISPR-Cas9 analysis confirmed that a point mutation in OsGELP34 is responsible for male sterility. OsGELP34 is highly expressed in reproductive tissues and codes for a putative GDSL lipase.

Based on the findings, OsGELP34 has an important function in rice male reproduction and has potential applications in rice hybrid breeding.

Read the full article in Molecular Breeding.

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