Genetic characteristics of circadian flowering rhythm in Hemerocallis
Genetic characteristics of circadian flowering rhythm in Hemerocallis
复制标题
萱草昼夜开花节律的遗传特征
DOI：
10.1016/j.scienta.2019.01.052
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发表时间：
2019-05
影响因子：
4.3
通讯作者：
Zhang Qixiang
中科院分区：
文献类型：
--
作者：
Ren Yi;Gao Yike;Gao Shuying;Yuan Lin;Wang Xueqin;Zhang Qixiang
环境同步的生物钟对植物的生长发育具有重要意义。在萱草属中，植物可分为白天（开放时间在3：00-15：00之间）和夜间（开放时间在15：00-3：00之间）开花。每朵花的持续时间不超过24 h。通过昼夜开花杂交获得的杂种是可育的，并且表现出与其亲本不同的日开花节律。因此，为了加深我们对大花萱草开花日节律的理解，我们通过观察大花萱草种间、品种间和杂种F1间开花过程来研究遗传。日开花节律是一个相对稳定的性状，可以通过育种计划来影响。黄花菜与睡莲杂交F1代有明显的夜间开放倾向。开放时间呈负偏单峰分布。封育时间呈正态分布（高峰时间为12：41-13：53，接近双亲的中间值）。当品种用作亲本时，变异增加，特别是在封育期。结果表明，萱草属植物的开放性为混合主基因座多基因遗传，以夜间开放为主。闭合受多个遗传位点控制。开放和关闭的遗传是由不同的细胞核生物钟基因，也许光受体结合基序控制。利用品种多样性，通过杂交可有效延长单花持续时间。此外，认为日开花节律不是一个完全保守的特征，可能部分受环境影响。
An environmentally synchronized circadian clock is important for plant growth and developments. In the genusHemerocallis,plants can be divided into diurnal (open between 3:00-15:00) and nocturnal (open between 15:00-3:00) flowering. The duration of each single flower is no more than 24 h. Hybrids obtained through crossing between diurnal and nocturnal flowers are fertile and show different daily flowering rhythms from their parents. Therefore, to enhance our understanding of daily circadian flowering rhythms inHemerocallis, we studied inheritance by observing flowering processes among species, cultivars and F1 hybrids. Daily flowering rhythm was a relatively stable character that could be influenced through a breeding program. In F1 generations of crosses between daylilies and nightlilies, there was an obvious tendency toward nocturnal opening. Opening times showed a negatively skewed and leptokurtic distribution with a single peak. Closure times showed a normal distribution (peak times were 12:41–13:53, almost the mid-parent value). Variation increased when cultivars were used as parents, especially in closure times. Observations over 4 years showed subtle differences with a similar trend.Our results suggest that inHemerocallis, opening is characterized by mixed major loci and polygenic inheritance, with dominant nocturnal opening. Closure was controlled by multiple genetic loci. Inheritance of opening and closure is controlled by different nuclear circadian clock genes and perhaps photoreceptor-binding motifs. By manipulating cultivar diversity, single flower duration could be prolonged effectively through hybridization. In addition, it was assumed that daily flowering rhythm was not a completely conserved character, and could be partly affected by environment.
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影响因子：
11.4
作者：
Felipe Yon;D. Kessler;Youngsung Joo;Lucas Cortés Llorca;Sang-Gyu Kim;I. Baldwin
通讯作者：
Felipe Yon;D. Kessler;Youngsung Joo;Lucas Cortés Llorca;Sang-Gyu Kim;I. Baldwin
DOI：
10.1111/nph.13681
发表时间：
2016-02
期刊：
The New phytologist
影响因子：
--
作者：
Yon F;Joo Y;Cortés Llorca L;Rothe E;Baldwin IT;Kim SG
通讯作者：
Kim SG
影响因子：
5.4
作者：
Jeffrey Tomkins;Todd C. Wood;L. S. Barnes;A. Westman;R. A. Wing
通讯作者：
Jeffrey Tomkins;Todd C. Wood;L. S. Barnes;A. Westman;R. A. Wing
影响因子：
7.4
作者：
Green, RM;Tingay, S;Tobin, EM
通讯作者：
Tobin, EM
影响因子：
7.4
作者：
Réka Tóth;E. Kevei;Anthony J W Hall;A. Millar;F. Nagy;László Kozma-Bognár
通讯作者：
Réka Tóth;E. Kevei;Anthony J W Hall;A. Millar;F. Nagy;László Kozma-Bognár