Arabidopsis thaliana PRL1 is involved in low-calcium tolerance

作者：Shikanai Yusuke; Yamagami Mutsumi; Shigenobu Shuji; Yamaguchi Katsushi; Kamiya Takehiro; Fujiwara Toru^*

来源：Soil Science and Plant Nutrition, 2015, 61(6): 951-956.

DOI：10.1080/00380768.2015.1086277

• Arabidopsis thaliana
• calcium deficiency
• mutant screening
• sugar metabolism
• PRL1

Calcium (Ca) deficiency symptoms in plants often occur in agriculture; however, little is known about the mechanisms for adaptation to low-Ca conditions. To understand the mechanisms, we screened for Arabidopsis thaliana (L.) Heynh mutants sensitive to low Ca. Here, we describe one of the mutants, lcs1-1, isolated from the screen. The relative shoot growth of the mutant was reduced under the low-Ca conditions compared with the wild-type plants. Genetic mapping and genome resequencing revealed that lcs1-1 has one nonsynonymous mutation in the region of the chromosome responsible for the phenotype. The mutation is in Pleiotropic Regulatory Locus 1 (PRL1). An allelism test between lcs1-1 and a T-DNA inserted allele of prl1 demonstrates that the causal gene of lcs1-1 is PRL1. It has been reported that PRL1 is involved in sugar metabolism; however, the involvement of PRL1 in low-Ca tolerance has not been reported. Our results suggest a new insight connecting sugar metabolism with a mechanism for low-Ca tolerance in plants.

• 出版日期2015-11-2