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著者 Leaungthitikanchana S., Fujibe T., Tanaka M., Wang S., Sotta N., Takano J., Fujiwara T.
タイトル Differential expression of three BOR1 genes corresponding to different genomes in response to boron conditions in hexaploid Wheat (Triticum aestivum L.).
Abstract:
Boron (B) is an essential micronutrient for plants. Efflux-type B transporters, BORs, have been identified in Arabidopsis thaliana and rice (Takano et al., 2002; Nakagawa et al., 2007). Here we identified BOR1 genes encoding B efflux transporters, from the hexaploid genome of wheat (Triticum aestivum L.). We cloned three genes closely related to Os BOR1 and named as Ta BOR1.1, Ta BOR1.2 and Ta BOR1.3. All three Ta BOR1s showed B efflux activities when expressed in tobacco BY-2 cells. Ta BOR1s-green fluorescent protein (GFP) fusion proteins were expressed in Arabidopsis leaf cells localized in the plasma membrane. Transcript accumulation patterns of three genes differ in terms of tissue specificity and B nutrition responses. In roots, transcripts for all three genes accumulated abundantly while in shoots, Ta BOR1.2 transcript is the most abundant followed by those of Ta BOR1.1 and Ta BOR1.3. Accumulation of Ta BOR1.1 transcript is up-regulated under B deficiency conditions in both roots and shoots. In contrast, Ta BOR1.2 transcript accumulation significantly increased in roots under the excess B condition. Ta BOR1.3 transcript accumulation was reduced under the excess B condition. Taken together, these results demonstrated that Ta BOR1s are the B efflux transporters in wheat and interestingly the genes on the A, B, and D genomes have different expression patterns.
掲載誌 Plant Cell Physiol.
Country Japan
刊数 54(7)
ページ 1056-63
発刊年 2013
PubMed ID 23596187
PubMed Central ID -
DOI 10.1093/pcp/pct059
URL -
関連情報
遺伝子 BOR1 BOR2 BOR3 BOR4
INSD -
系統 野生イネ
コアコレクション 		-
突然変異系統(遺伝研 Collection) -
種子不稔系統 -
致死変異体系統 -
組織別発生段階
- 突然変異系統(遺伝子) 		-
栽培イネ品種(遺伝研 Collection) -
組織別発生段階 -
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