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Published on: December 22, 2023
BcPME37c is involved in pollen intine formation in Brassica campestris
Xingpeng Xiong1, Dong Zhou1, Liai Xu1
1Laboratory of Cell and Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou, 310058, China.
Abstract:
Pollen wall development is one of the key processes of pollen development. Several pectin methylesterase (PME) genes participate in pollen germination and pollen tube growth. However, the relationship between PME genes and pollen intine formation remains unclear. In this study, we investigated the expression and subcellular localization of the PME gene BcPME37c in Brassica campestris. Furthermore, morphology and cytology methods were used to examine the phenotype of the CRISPR/Cas9 system-induced BcPME37c mutant. We found that BcPME37c is predominately expressed in mature stamen and located at the cell wall. BcPME37c mutation causes the abnormal thickening of the pollen intine of B. campestris. Our study indicated that BcPME37c is required for pollen intine formation in B. campestris.
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