缺磷诱导的花青素积累对番茄中番茄（Solanum lycopersicum）GLABRA3（SlGL3）表达的影响。
Effect of phosphate deficiency-induced anthocyanin accumulation on the expression of Solanum lycopersicum GLABRA3 (SlGL3) in tomato.
作者信息
Tominaga-Wada R, Masakane A, Wada T
机构信息
a Graduate School of Biosphere Sciences , Hiroshima University , Higashi-Hiroshima , Japan.
出版信息
Plant Signal Behav. 2018;13(6):e1477907. doi: 10.1080/15592324.2018.1477907. Epub 2018 Jun 26.
Abstract
In Arabidopsis thaliana, the bHLH transcription factor, GLABRA3 (AtGL3), is an important regulator of epidermal cell differentiation and positively controls anthocyanin accumulation. In contrast, we previously showed that Solanum lycopersicum GLABRA3 (SlGL3), the AtGL3 homolog, suppressed anthocyanin accumulation in Arabidopsis. To clarify this functional discrepancy in anthocyanin accumulation, we analyzed the SlGL3 expression pattern in anthocyanin-induced tomato. The SlGL3 expression was significantly reduced in tomato seedlings rich in anthocyanin as a result of inorganic phosphate (Pi) starvation. This was consistent with the previous result obtained in Arabidopsis, wherein the overexpression of SlGL3 was shown to inhibit anthocyanin accumulation. Our study suggests that the function of SlGL3 is different from that of AtGL3, and it might inhibit anthocyanin accumulation in tomato.
摘要
在拟南芥中，bHLH转录因子GLABRA3（AtGL3）是表皮细胞分化的重要调节因子，并正向调控花青素积累。相比之下，我们之前发现，AtGL3的同源物番茄（Solanum lycopersicum）GLABRA3（SlGL3）抑制了拟南芥中的花青素积累。为了阐明花青素积累方面的这种功能差异，我们分析了花青素诱导型番茄中SlGL3的表达模式。由于无机磷酸盐（Pi）饥饿，富含花青素的番茄幼苗中SlGL3的表达显著降低。这与之前在拟南芥中获得的结果一致，在拟南芥中，SlGL3的过表达被证明会抑制花青素积累。我们的研究表明，SlGL3的功能与AtGL3不同，它可能会抑制番茄中的花青素积累。
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本文引用的文献
1
Arabidopsis CAPRICE (MYB) and GLABRA3 (bHLH) control tomato (Solanum lycopersicum) anthocyanin biosynthesis.拟南芥CAPRICE（MYB）和GLABRA3（bHLH）调控番茄（茄属番茄）花青素的生物合成。
PLoS One. 2014 Sep 30;9(9):e109093. doi: 10.1371/journal.pone.0109093. eCollection 2014.
2
Tomato (Solanum lycopersicum) homologs of TRIPTYCHON (SlTRY) and GLABRA3 (SlGL3) are involved in anthocyanin accumulation.番茄（Solanum lycopersicum）的 TRIPTYCHON（SlTRY）和 GLABRA3（SlGL3）同源物参与了花色素苷的积累。
Plant Signal Behav. 2013 Jul;8(7):e24575. doi: 10.4161/psb.24575. Epub 2013 Apr 16.
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Control of plant trichome and root-hair development by a tomato (Solanum lycopersicum) R3 MYB transcription factor.番茄（Solanum lycopersicum） R3 MYB 转录因子调控植物表皮毛和根毛发育。
PLoS One. 2013;8(1):e54019. doi: 10.1371/journal.pone.0054019. Epub 2013 Jan 11.
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