拟南芥光敏色素突变体种子萌发的光温敏感性

doi:10.11983/CBB24008

植物学报 ›› 2024, Vol. 59 ›› Issue (5): 752-762.DOI: 10.11983/CBB24008 cstr: 32102.14.CBB24008

拟南芥光敏色素突变体种子萌发的光温敏感性

罗燕, 刘奇源, 吕元兵, 吴越, 田耀宇, 安田, 李振华^*()

贵州大学农学院, 贵州省粮油作物分子育种重点实验室, 贵州省高等学校功能农业重点实验室, 贵阳 550025

收稿日期:2024-01-15 接受日期:2024-07-14 出版日期:2024-09-10 发布日期:2024-08-19
通讯作者: 李振华
基金资助:
国家自然科学基金(32060512);国家自然科学基金(31860420);贵州省科技计划(黔科合平台人才[2018]5781号);贵州省粮油作物分子育种重点实验室项目(黔科合中引地[2023]008);贵州省高等学校功能农业重点实验室项目(黔教技[2023]007号)

Photothermal Sensitivity of Phytochrome Mutants During Seed Germination in Arabidopsis thaliana

Luo Yan, Liu Qiyuan, Lü Yuanbing, Wu Yue, Tian Yaoyu, An Tian, Li Zhenhua^*()

Key Laboratory of Functional Agriculture of Guizhou Provinical Higher Education Institutions, Key Laboratory of Molecular Breeding for Grain and Oil Crops in Guizhou Province, College of Agronomy, Guizhou University, Guiyang 550025, China

Received:2024-01-15 Accepted:2024-07-14 Online:2024-09-10 Published:2024-08-19
Contact: Li Zhenhua

摘要/Abstract

摘要： 为阐明光敏色素家族基因突变对拟南芥(Arabidopsis thaliana)种子萌发时环境适应性的影响, 以野生型(Col-0)种子为对照, 对比了phyA、phyB、phyC、phyD和phyE单突变体种子在12种光温环境下萌发率的差异。结果表明, phyA突变体种子适应在红光下萌发, 而不适应在远红光和高温(35°C)下萌发。phyB突变体种子适应在白光和远红光背景下的低温(15°C)和适温(25°C)下萌发; 而不适应在高温(35°C)下萌发。phyC突变体种子适应在除白光35°C以外的11种光温环境下萌发。phyD或phyE突变体种子适应在低温(15°C)和适温(25°C)下萌发, 而不适应在高温(35°C)下萌发; 适应在红光和白光下萌发, 而不适应在黑暗和远红光下萌发。5个成员中, phyB、phyC和phyD的突变体种子可能丧失光温整合能力, 而phyA和phyE的突变体种子未丧失光温整合能力。综上, 光敏色素家族基因突变导致种子萌发对光、温和光×温的适应性改变, 通过靶向修饰光敏色素家族基因可提升种子萌发对不同生态环境的适应性。

关键词: 光敏色素, 拟南芥, 种子萌发, 光质, 温度, 生态适应性

Abstract: The phytochrome gene family play a critical role in mediating photothermal responses during Arabidopsis thaliana seed germination. Here we evaluated the germination rates of phyA, phyB, phyC, phyD, and phyE single mutants under 12 different light and temperature regimes, using wild-type (Col-0) seeds as controls. Our results indicate that phyA mutant seeds germinate under red light but are inhibited under far-red light and high temperatures (35°C). phyB mutant seeds germinate at low (15°C) and moderate (25°C) temperatures under both white light and far-red light, but not at high temperatures (35°C). phyC mutant seeds show consistent germination across all conditions except under white light at high temperature (35°C). Both phyD and phyE mutant seeds germinate at low (15°C) and moderate (25°C) temperatures, and under red and white light, but not at high (35°C) temperature, darkness or far-red light. These observations suggest that phyB, phyC, and phyD mutants may have impaired integration of light and temperature cues, whereas phyA and phyE mutants appear to maintain this integrative function. Overall, our findings demonstrate that mutations in phytochrome genes can modify seed germination adaptability to varying environmental conditions.

Key words: phytochrome, Arabidopsis, seed germination, light quality, temperature, ecological adaptability

中图分类号:

S330

罗燕, 刘奇源, 吕元兵, 吴越, 田耀宇, 安田, 李振华. 拟南芥光敏色素突变体种子萌发的光温敏感性. 植物学报, 2024, 59(5): 752-762.

Luo Yan, Liu Qiyuan, Lü Yuanbing, Wu Yue, Tian Yaoyu, An Tian, Li Zhenhua. Photothermal Sensitivity of Phytochrome Mutants During Seed Germination in Arabidopsis thaliana. Chinese Bulletin of Botany, 2024, 59(5): 752-762.

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链接本文: https://www.chinbullbotany.com/CN/10.11983/CBB24008

https://www.chinbullbotany.com/CN/Y2024/V59/I5/752

图/表 4

参考文献 34

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Source	I	J	Mean difference (I-J)	P-value	Standard deviation
Genotype	Col-0	phyA	-4.12	0.069	30.15
		phyB	-2.87	0.104	24.32
		phyC	-16.98	0.000***	30.61
		phyD	-10.42	0.000***	28.95
		phyE	-9.28	0.000***	31.18
	phyA	phyB	1.25	0.682	27.13
		phyC	-12.86	0.000***	32.44
		phyD	-6.3	0.01**	31.10
		phyE	-5.16	0.03*	33.22
	phyB	phyC	-14.11	0.000***	27.29
		phyD	-7.55	0.000***	25.60
		phyE	-6.41	0.046*	28.13
	phyC	phyD	6.56	0.000***	30.46
		phyE	7.69	0.000***	32.73
	phyD	phyE	1.14	0.060	31.67
Temperature	15°C	25°C	8.75	0.000***	29.72
		35°C	55.76	0.000***	29.99
	25°C	35°C	47.01	0.000***	29.21
Light	Darkness	White light	-8.89	0.000***	29.79
		Red light	-12.55	0.000***	29.99
		Far-red light	16.13	0.230	30.11
	White light	Red light	-3.66	0.272	30.18
		Far-red light	25.02	0.034*	29.67
	Red light	Far-red light	28.68	0.000***	28.79

Source	I	J	Mean difference (I-J)	P-value	Standard deviation
Genotype	Col-0	phyA	-4.12	0.069	30.15
		phyB	-2.87	0.104	24.32
		phyC	-16.98	0.000***	30.61
		phyD	-10.42	0.000***	28.95
		phyE	-9.28	0.000***	31.18
	phyA	phyB	1.25	0.682	27.13
		phyC	-12.86	0.000***	32.44
		phyD	-6.3	0.01**	31.10
		phyE	-5.16	0.03*	33.22
	phyB	phyC	-14.11	0.000***	27.29
		phyD	-7.55	0.000***	25.60
		phyE	-6.41	0.046*	28.13
	phyC	phyD	6.56	0.000***	30.46
		phyE	7.69	0.000***	32.73
	phyD	phyE	1.14	0.060	31.67
Temperature	15°C	25°C	8.75	0.000***	29.72
		35°C	55.76	0.000***	29.99
	25°C	35°C	47.01	0.000***	29.21
Light	Darkness	White light	-8.89	0.000***	29.79
		Red light	-12.55	0.000***	29.99
		Far-red light	16.13	0.230	30.11
	White light	Red light	-3.66	0.272	30.18
		Far-red light	25.02	0.034*	29.67
	Red light	Far-red light	28.68	0.000***	28.79

Germination ratio among different genotype (G)	Environmental combinations of light and temperature
Significantly higher than wild type	phyA: WT₁₅, WT₂₅, WT₃₅, RT₂₅, and RT₃₅ phyB: DT₃₅, WT₃₅, FRT₁₅, FRT₂₅, and FRT₃₅ phyC: WT₁₅, WT₂₅, DT₁₅, DT₂₅, DT₃₅, RT₁₅, RT₂₅, RT₃₅, FRT₁₅, FRT₂₅, and FRT₃₅ phyD: WT₁₅, WT₂₅, DT₁₅, DT₂₅, DT₃₅, RT₂₅, FRT₂₅, and FRT₃₅ phyE: WT₂₅, RT₁₅, RT₂₅, and FRT₂₅
Significantly lower than wild type	phyA: FRT₁₅, and FRT₃₅ phyB: WT₁₅, and DT₁₅ phyE: FRT₃₅
No significant difference	phyA: DT₁₅, DT₂₅, DT₃₅, RT₁₅, and FRT₂₅ phyB: WT₂₅, DT₂₅, RT₁₅, RT₂₅, and RT₃₅ phyC: WT₃₅ phyD: WT₃₅, RT₁₅, RT₃₅, and FRT₁₅ phyE: DT₁₅, DT₂₅, DT₃₅, WT₁₅, WT₃₅, RT₃₅, and FRT₁₅
Maximum	phyA: WT₁₅, RT₁₅, WT₂₅, and RT₂₅ phyB: DT₁₅, WT₁₅, RT₁₅, and WT₂₅ phyC: WT₁₅, RT₁₅, WT₂₅, and RT₂₅ phyD: DT₁₅, WT₁₅, RT₁₅, and WT₂₅ phyE: WT₁₅, RT₁₅, WT₂₅, and RT₂₅ Col-0: DT₁₅, WT₁₅, RT₁₅, and WT₂₅
Minimum	phyA: FRT₂₅, FRT₃₅, DT₃₅, and WT₃₅ phyB: DT₃₅, WT₃₅, RT₃₅, and FRT₃₅ phyC: DT₃₅, WT₃₅, RT₃₅, and FRT₃₅ phyD: DT₃₅, WT₃₅, RT₃₅, and FRT₃₅ phyE: DT₃₅, WT₃₅, RT₃₅, and FRT₃₅ Col-0: DT₃₅, WT₃₅, RT₃₅, and FRT₃₅

Germination ratio among different genotype (G)	Environmental combinations of light and temperature
Significantly higher than wild type	phyA: WT₁₅, WT₂₅, WT₃₅, RT₂₅, and RT₃₅ phyB: DT₃₅, WT₃₅, FRT₁₅, FRT₂₅, and FRT₃₅ phyC: WT₁₅, WT₂₅, DT₁₅, DT₂₅, DT₃₅, RT₁₅, RT₂₅, RT₃₅, FRT₁₅, FRT₂₅, and FRT₃₅ phyD: WT₁₅, WT₂₅, DT₁₅, DT₂₅, DT₃₅, RT₂₅, FRT₂₅, and FRT₃₅ phyE: WT₂₅, RT₁₅, RT₂₅, and FRT₂₅
Significantly lower than wild type	phyA: FRT₁₅, and FRT₃₅ phyB: WT₁₅, and DT₁₅ phyE: FRT₃₅
No significant difference	phyA: DT₁₅, DT₂₅, DT₃₅, RT₁₅, and FRT₂₅ phyB: WT₂₅, DT₂₅, RT₁₅, RT₂₅, and RT₃₅ phyC: WT₃₅ phyD: WT₃₅, RT₁₅, RT₃₅, and FRT₁₅ phyE: DT₁₅, DT₂₅, DT₃₅, WT₁₅, WT₃₅, RT₃₅, and FRT₁₅
Maximum	phyA: WT₁₅, RT₁₅, WT₂₅, and RT₂₅ phyB: DT₁₅, WT₁₅, RT₁₅, and WT₂₅ phyC: WT₁₅, RT₁₅, WT₂₅, and RT₂₅ phyD: DT₁₅, WT₁₅, RT₁₅, and WT₂₅ phyE: WT₁₅, RT₁₅, WT₂₅, and RT₂₅ Col-0: DT₁₅, WT₁₅, RT₁₅, and WT₂₅
Minimum	phyA: FRT₂₅, FRT₃₅, DT₃₅, and WT₃₅ phyB: DT₃₅, WT₃₅, RT₃₅, and FRT₃₅ phyC: DT₃₅, WT₃₅, RT₃₅, and FRT₃₅ phyD: DT₃₅, WT₃₅, RT₃₅, and FRT₃₅ phyE: DT₃₅, WT₃₅, RT₃₅, and FRT₃₅ Col-0: DT₃₅, WT₃₅, RT₃₅, and FRT₃₅

	Source	III class sum of squares	Degrees of freedom	Mean square	F	Significance
phyA	Light	15567	3	5189	209.187	0.000***
	Temperature	38280.25	2	19140.125	771.606	0.000***
	Genotype	304.222	1	304.222	12.264	0.001***
	Light × temperature	7754.083	6	1292.347	52.099	0.000***
	Genotype × light	1510.111	3	503.37	20.293	0.000***
	Genotype × temperature	285.194	2	142.597	5.749	0.006**
	Light × temperature × genotype	598.472	6	99.745	4.021	0.002**
phyB	Light	4195.819	3	1398.606	65.051	0.000***
	Temperature	32368.583	2	16184.292	752.758	0.000***
	Genotype	147.347	1	147.347	6.853	0.012*
	Light × temperature	3413.972	6	568.995	26.465	0.000***
	Genotype × light	670.597	3	223.532	10.397	0.000***
	Genotype × temperature	524.694	2	262.347	12.202	0.000***
	Light × temperature × genotype	239.861	6	39.977	1.859	0.107
phyC	Light	6708.819	3	2236.273	118.217	0.000***
	Temperature	48960.194	2	24480.097	1294.102	0.000***
	Genotype	5185.014	1	5185.014	274.098	0.000***
	Light × temperature	3795.139	6	632.523	33.437	0.000***
	Genotype × light	1587.028	2	793.514	41.948	0.000***
	Genotype × temperature	67.819	3	22.606	1.195	0.322
	Light × temperature × genotype	259.639	6	43.273	2.288	0.051
phyD	Light	8161.597	3	2720.532	138.137	0.000***
	Temperature	42934.194	2	21467.097	1090.008	0.000***
	Genotype	1953.125	1	1953.125	99.171	0.000***
	Light × temperature	5383.361	6	897.227	45.557	0.000***
	Genotype × light	181.708	3	60.569	3.075	0.036*
	Genotype × temperature	715.75	2	357.875	18.171	0.000***
	Light × temperature × genotype	80.25	6	13.375	0.679	0.667
phyE	Light	10177.944	3	3392.648	183.662	0.000***
	Temperature	47446.583	2	23723.292	1284.268	0.000***
	Genotype	1549.389	1	1549.389	83.877	0.000***
	Light × temperature	5985.306	6	997.551	54.003	0.000***
	Genotype × light	528.611	3	176.204	9.539	0.000***
	Genotype × temperature	3100.861	2	1550.431	83.933	0.000***
	Light × temperature × genotype	334.139	6	55.69	3.015	0.014*

拟南芥光敏色素突变体种子萌发的光温敏感性

Photothermal Sensitivity of Phytochrome Mutants During Seed Germination in Arabidopsis thaliana

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