Cold sensitivity gradient in tuber-bearing Solanum based on physiological and transcript profiles
Cold sensitivity gradient in tuber-bearing Solanum based on physiological and transcript profiles
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DOI：
10.2135/cropsci2007.01.0039sc
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发表时间：
2007-09-01
期刊：
影响因子：
2.3
通讯作者：
de los Reyes, Benildo G.
中科院分区：
文献类型：
--
作者：
Ballou, Susan M.;Yun, Kil-Young;de los Reyes, Benildo G.
结瘤茄属物种在冷敏感性方面表现出广泛的变化。生理评价的基础上泄漏的细胞电解质表现出连续梯度的敏感性之间的栽培和野生物种，其范围从低温敏感性的耐寒性冷驯化（CA）。三裂龙葵（Solanum trifidum Correll）是一种冷敏感的植物，它是该属植物的耐寒性的基础;一个适应寒冷的物种，代表了光谱中最难的一端。在敏感性梯度的最末端的茄属物种表现出不同的表达特征，为选定的CA相关基因（CBF 1，ZAT 12，COR 47，和GolS 3）。转录因子（CBF 1和ZAT 12）表达与CA呈正相关，但与非适应物种之间的敏感性梯度无关。通过非调节基因（COP 47和GolS 3）诱导谱的差异反映了整个敏感性梯度的变化。
Tuber-bearing Solanum species exhibit a wide variation with respect to cold sensitivity. Physiological evaluation based on the leakage of cellular electrolytes showed a continuous gradient of sensitivity among cultivated and wild species, which ranged from chilling sensitivity to freezing tolerance by cold acclimation (CA). Solanum trifidum Correll, a chilling-sensitive species, defines the baseline of cold tolerance within the genus, while S. commersonii Dunal, a cold-acclimating species, represents the hardiest end of the spectrum. Solanum species at the extreme ends of the sensitivity gradient exhibited distinct expression signatures for selected CA-associated genes (CBF1, ZAT12, COR47, and GolS3). Transcription factor (CBF1 and ZAT12) expression was positively correlated with CA but not with the sensitivity gradient among nonacclimating species. Variation across the sensitivity gradient was reflected by the differences in induction profiles of nonregulatory genes (COP47 and GolS3).