干旱区生态环境知识资源中心(Arid): 24-Epibrassinolide Mediated Interaction among Antioxidant Defense, Lignin Metabolism, and Phytohormones Signaling Promoted Better Cooperative Elongation of Maize Mesocotyl and Coleoptile under Deep-Seeding Stress

Arid

DOI	10.1134/S1021443721060224
	24-Epibrassinolide Mediated Interaction among Antioxidant Defense, Lignin Metabolism, and Phytohormones Signaling Promoted Better Cooperative Elongation of Maize Mesocotyl and Coleoptile under Deep-Seeding Stress
	Zhao, X. Q.; Zhong, Y.
通讯作者	Zhao, XQ (corresponding author), Gansu Agr Univ, Gansu Prov Key Lab Aridland Crop Sci, Lanzhou 730070, Peoples R China.
来源期刊	RUSSIAN JOURNAL OF PLANT PHYSIOLOGY
ISSN	1021-4437
EISSN	1608-3407
出版年	2021
卷号	68 期号:6 页码:1194-1207
英文摘要	Both mesocotyl and coleoptile synergistic elongation of maize are the major causes of its deep-seeding tolerance. To elucidate the physiological mechanism of their elongation induced by brassinosteroid under deep-seeding stress, seeds of deep-seeding tolerant N192, W64 and intolerant Ji853, K12 were treated with 4.16 x 10(-3) M exogenous 24-epibrassinolide (EBR) under 3 or 20 cm seeding depths. The cumulative mesocotyl/coleoptile length reached a maximum of 8.37/5.02 cm on the 12th day of growth at lack of seeding depths in darkness, maximum cumulative seedling length was 21.25 cm on the 22th day; There were complex linear relationships between the four growth parameters of seedlings (maximum cumulative mesocotyl/coleoptil/total mesocotyl and coleoptile/seedling length) and seed characteristics (seed size, weight, physical properties, reserves) by Pearson correlation analysis and path analysis, further using the seed characteristics to establish four optimal regression equations to predict their growth parameters. 4.16 x 10(-3) M exogenous EBR application changed both mesocotyl and coleoptile enzymes system, alleviated the reactive oxygen species damage, decreased lignin accumulation, and regulated phytohormones level and polar transport in maize under 20 cm stress, resulting in 26.20, 4.37, 17.53, and 16.33% increase on mesocotyl length, coleoptile length, mesocotyl and coleoptile total length, and ratio of mesocotyl to coleoptile to normally germinate of seedlings under deep soil layer. Additionally, the expression of Zm00001d033286 (PAL), GRMZM2G159393 (YUCCA2), GRMZM2G017187 (ARF9), MSTRG.30577 (BIN2), and GRMZM2G413006 (TCH4) changed in parallel with mesocotyl and coleoptile elongation under different treatments. Therefore, EBR, regulatory role in maize mesocotyl and coleoptile elongation, can promote its safety production in arid regions.
英文关键词	Zea mays deep-seeding 24-epibrassinolide mesocotyl elongation coleoptile elongation phytohormones lignin
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000713613100021
WOS关键词	TOLERANCE ; ENZYME ; AUXIN ; GENES
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368011
作者单位	[Zhao, X. Q.; Zhong, Y.] Gansu Agr Univ, Gansu Prov Key Lab Aridland Crop Sci, Lanzhou 730070, Peoples R China
推荐引用方式 GB/T 7714	Zhao, X. Q.,Zhong, Y.. 24-Epibrassinolide Mediated Interaction among Antioxidant Defense, Lignin Metabolism, and Phytohormones Signaling Promoted Better Cooperative Elongation of Maize Mesocotyl and Coleoptile under Deep-Seeding Stress[J],2021,68(6):1194-1207.
APA	Zhao, X. Q.,&Zhong, Y..(2021).24-Epibrassinolide Mediated Interaction among Antioxidant Defense, Lignin Metabolism, and Phytohormones Signaling Promoted Better Cooperative Elongation of Maize Mesocotyl and Coleoptile under Deep-Seeding Stress.RUSSIAN JOURNAL OF PLANT PHYSIOLOGY,68(6),1194-1207.
MLA	Zhao, X. Q.,et al."24-Epibrassinolide Mediated Interaction among Antioxidant Defense, Lignin Metabolism, and Phytohormones Signaling Promoted Better Cooperative Elongation of Maize Mesocotyl and Coleoptile under Deep-Seeding Stress".RUSSIAN JOURNAL OF PLANT PHYSIOLOGY 68.6(2021):1194-1207.