Influence of Anthocyanin Biosynthesis on Leaf and Fiber Color of Gossypium hirsutum L.
YUAN JingLi,, ZHENG HongLi, LIANG XianLi, MEI Jun, YU DongLiang, SUN YuQiang, KE LiPing,School of Life Sciences and Medicine, Zhejiang Sci-Tech University/Plant Genomics & Molecular Improvement of Colored Fiber Lab, Hangzhou 310018
Abstract 【Objective】Cotton is an important economic and oil crop. Both its leaves and fibers can accumulate pigments and present different colors. Studies have confirmed that chlorophyll, carotenoids, and anthocyanin are the main pigments in cotton leaves and their relative proportion changes leaf colors. While proanthocyanidins and their derivatives, which are oligomeric and polymeric products from anthocyanidins, are thought to be responsible for the color formation of brown fibers. This article intends to explore the relationship between the color of leaves and fibers in upland cotton through analyzing the anthocyanidin content and gene expression level in the anthocyanin biosynthesis pathway in different leaf color mutants. The result will help to lay the foundation for the utilization of leaf color mutants and the improvement of the color of colored cotton fibers. 【Method】In this experiment, the anthocyanidin contents in leaves of 21 upland cotton leaf color mutants were detected. According to the leaf and fiber color as well as the anthocyanidin content level, 6 cotton leaf color mutants were selected as materials to measure the anthocyanidin level in leaves and fibers at 15 days post anthesis to analyze the relationship between anthocyanidin content and the leaf or fiber color. Then the expression levels of GhCHS, GhLAR and GhANR in leaves and fibers at different developmental stages (5, 10, 15, 20 DPA) were measured to analyze the influence of target genes on the color formation of leaves and fibers. 【Result】The anthocyanidin content in the leaves of 21 leaf color mutants of G. hirsutum was significantly different, and the purple or fuchsia leaves had higher anthocyanidin content. In the selected six leaf color mutants, the anthocyanidin content in leaves was significantly higher than that in fibers, and brown fibers accumulated more anthocyanidins than white fibers. Compared to GhCHS, GhANR and GhLAR expressed at a very low level in leaves, and no significant correlation was found between leaf color and their expression level. While in fibers, the expressions of GhANR and GhLAR were obviously higher in brown fibers than in white fibers, especially in fibers of 5 DPA to 15 DPA. 【Conclusion】Anthocyanins played important roles in color formation of both leaves and fibers in upland cotton. Purple-red or purple leaves and brown fibers accumulated more anthocyanidins, while the formation of fiber color did not directly correlate with leaf color. In fibers, the contents of anthocyanidins directly related to the expression levels of GhANR and GhLAR, indicating that coloration mechanism of cotton leaves and fibers was not exactly the same, and proanthocyanidins mainly accumulated in fibers. Keywords:Gossypium hirsutum L.;leaf color mutant;fiber color;anthocyanin;gene expression
PDF (1834KB)元数据多维度评价相关文章导出EndNote|Ris|Bibtex收藏本文 本文引用格式 袁景丽, 郑红丽, 梁先利, 梅俊, 余东亮, 孙玉强, 柯丽萍. 花青素代谢对陆地棉叶片和纤维色泽呈现的影响[J]. 中国农业科学, 2021, 54(9): 1846-1855 doi:10.3864/j.issn.0578-1752.2021.09.003 YUAN JingLi, ZHENG HongLi, LIANG XianLi, MEI Jun, YU DongLiang, SUN YuQiang, KE LiPing. Influence of Anthocyanin Biosynthesis on Leaf and Fiber Color of Gossypium hirsutum L.[J]. Scientia Acricultura Sinica, 2021, 54(9): 1846-1855 doi:10.3864/j.issn.0578-1752.2021.09.003
所用20份陆地棉叶色突变体由国家棉花种质资源中期库和国家棉花种质资源平台提供(表1)。紫化突变体HS2、C312和棕絮1号(ZX1)由浙江理工大学植物基因组与彩色纤维分子改良实验室保存。试验材料于2017—2020年种植在浙江理工大学棉花试验地(浙江杭州下沙校区),按照大田常规栽培管理。采集幼叶及5、10、15和20 DPA(day post anthesis,开花后天数)纤维,3个生物学重复,液氮速冻,-80℃保存备用。
Table 1 表1 表1试验材料 Table 1Experimental materials
样本编号 ID
名称 Name
原产地 Place of origin
叶色 Leaf color
纤维颜色 Fiber color
1
红叶白絮 Hongyebaixu
中国山西省 Shanxi Province, China
紫 Purple
白 White
2
石河子822 Shihezi 822
中国新疆建设兵团Xinjiang Construction Corps, China
绿/紫Green/purple
白 White
3
送兴红叶B Songxinghongye B
中国河北Hebei, China
红Red
白 White
4
红叶棕絮 Hongyezongxu
中国山西Shanxi, China
绿Green
棕 Brown
5
锦9-70 Jin 9-70
中国辽宁Liaoning, China
绿Green
白 White
6
紫花棉 Zihuamian
中国辽宁Liaoning, China
绿/紫Green/purple
棕 Brown
7
红叶鸡脚 Hongyejijiao
中国四川Sichuan, China
红Red
白 White
8
安徽红桃棉 Hongtao
中国安徽Anhui, China
红Red
白 White
9
LA877
美国 U.S.A
绿/红Green/purple
白 White
10
抗红叶 Kanghongye
中国四川Sichuan, China
红Red
白 White
11
小红叶 Xiaohongye
中国河南Henan, China
红Red
白 White
12
红叶花苞棉 Hongyehuabaomian
中国河南Henan, China
红Red
白 White
13
矮红株 Aihongzhu
中国江苏Jiangsu, China
紫Purple
白 White
14
芽黄棉1号 Yahuangmian1
中国湖北Hubei, China
黄/绿Yellow/green
白 White
15
花斑叶Huabanye
中国河南Henan, China
斑驳Mottled leaf
白 White
16
斑叶棉 Banyemian
中国河南Henan, China
斑驳Mottled leaf
白 White
17
红鸡脚柳苞 Hongjijiaoliubao
中国贵州 Guizhou, China
紫Purple
白 White
18
红槿矮 Hongjinai
中国湖北 Hubei, China
绿Green
白 White
19
观赏棉120 Guanshangmian120
中国河北Hebei, China
中红Middle red
白 White
20
贵池红叶 Guichihongye
中国安徽Anhui, China
紫Purple
白 White
21
HS2
中国浙江Zhejiang, China
紫Purple
白 White
绿/紫(红):表示夏季叶片呈绿色,秋天呈紫(红)色;黄/绿:表示苗期叶片呈黄色,后期叶片呈绿色 Green/Purple (Red): Indicates leaves showed green in summer and purple (red) in autumn; Yellow/Green: Indicates leaves in young seedlings showed yellow and turned green in autumn
采集叶色突变体幼叶及5、10、15和20 DPA(day post anthesis,开花后天数)纤维,按照多糖多酚植物RNA提取试剂盒说明书进行RNA提取,并将RNA浓度稀释到200 ng·μL-1,参照反转录试剂盒说明书反转录成cDNA,以泛素延伸蛋白7(ubiquitin extension protein 7,GhUBQ7)基因为内参基因,进行PCR扩增,检测其纯度。最终将cDNA稀释10倍后于-20℃保存。
依据光波长530 nm处吸收峰值自上向下的顺序为:20、21、17、13、7、1、4、15、10、19、11、3、2、18、12、14、6、16、5、9、8 Fig. 2Scanning of anthocyanins extraction solution in the leaf color mutants of G. hirsutum L.
According to the absorption value at light wavelength 530 nm, the sample ID from top to bottom is 20, 21, 17, 13, 7, 1, 4, 15, 10, 19, 11, 3, 2, 18, 12, 14, 6, 16, 5, 9, 8
A:叶色突变体的叶片花青素含量;B:叶色突变体的纤维花青素含量 Fig. 5Comparison of anthocyanin content of leaves and fibers (15DPA) in the different leaf color mutants of G. hirsutum L.
A: Anthocyanin content in leaves of leaf color mutants; B: Anthocyanin content in fiber of leaf color mutant
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