Exogenous Boron supplementation partially rescues fertilization defect of osbor4 mutant.

Abstract excerpt

Arabidopsis thaliana BOR1 is the first boron (B) transporter identified in the living systems. In the rice genome, there are four AtBOR1-like genes, OsBOR1, 2, 3 and 4. We have previously demonstrated that OsBOR4 is a B efflux transporter gene specifically expressed in rice pollen. OsBOR4 heterozygous lines showed abnormal segregation ratio, suggesting the significance of OsBOR4 in rice pollen tube...

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