[1]杨文雅,翟懿铭,张黎.低温弱光胁迫下外源褪黑素和植物根际促生菌对紫罗勒光合特性及花青素代谢的影响[J].江苏农业科学,2025,53(14):177-185.
 Yang Wenya,et al.Influences of exogenous melatonin and PGPR on photosynthetic characteristics and anthocyanin metabolism of purple basil under low temperature and weak light stress[J].Jiangsu Agricultural Sciences,2025,53(14):177-185.
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低温弱光胁迫下外源褪黑素和植物根际促生菌对紫罗勒光合特性及花青素代谢的影响()

《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第53卷
期数:
2025年第14期
页码:
177-185
栏目:
园艺与林学
出版日期:
2025-07-20

文章信息/Info

Title:
Influences of exogenous melatonin and PGPR on photosynthetic characteristics and anthocyanin metabolism of purple basil under low temperature and weak light stress
作者:
杨文雅1翟懿铭1张黎2
1.银川能源学院,宁夏银川 750100; 2.宁夏大学农学院,宁夏银川 750001
Author(s):
Yang Wenyaet al
关键词:
褪黑素植物根际促生菌光合作用紫罗勒花青素
Keywords:
-
分类号:
S636.901
DOI:
-
文献标志码:
A
摘要:
为探究低温弱光胁迫下外源褪黑素和植物根际促生菌对紫罗勒光合特性及花青素代谢的影响,设置低温弱光胁迫[温度5 ℃,光照度100 μmol/(m2·s)]下叶面喷施不同浓度(50、100、200 μmol/L)褪黑素以及配施植物根际促生菌(PGPR)的复合处理,以期为低温弱光胁迫下应用褪黑素以及PGPR协同技术促进植物生长提供理论依据。结果表明,低温弱光胁迫抑制紫罗勒株高、茎粗、叶面积以及植株鲜重的增加,光合作用下降,花青素代谢相关酶活性降低,而低温弱光胁迫下添加各浓度褪黑素以及褪黑素+PGPR处理对紫罗勒生长均具有一定的促进作用。低温弱光胁迫下,100 μmol/L褪黑素+PGPR处理的紫罗勒根系构型(根系总根长、根系总表面积、根系总体积、根系平均直径)参数最大,SPAD值、PSⅡ最大光化学效率(Fv/Fm)、PSⅡ潜在活性(Fv/Fo)较对照(LW,不喷施褪黑素、不接种PGPR)处理分别显著增加84.1%、124.1%和56.6%(P<0.05),NPQ显著降低50.3%;与对照处理相比,100 μmol/L褪黑素+PGPR处理的紫罗勒叶片净光合速率(Pn)、气孔导度(Gs)、蒸腾速率(Tr)和水分利用效率(WUE)分别显著增加1000%、87.4%、90.0%和73.1%,胞间CO2浓度(Ci)则显著下降34.7%。此外,添加各浓度褪黑素处理以及褪黑素+PGPR处理均对紫罗勒叶片中花青素合成酶(ANS)、苯丙氨酸解氨酶(PAL)、类黄酮3-葡糖基转移酶(3GT/UFGT)、查耳酮异构酶(CHI)、二氢黄酮还原酶(DFR)的活性以及花青素含量有不同程度的促进作用,渗透调节物质(可溶性糖和可溶性蛋白)积累量增加,且以100 μmol/L褪黑素+PGPR处理最高。综上,低温弱光胁迫下喷施100 μmol/L褪黑素+PGPR处理的紫罗勒生长效果最佳。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2024-07-16
基金项目:国家自然科学基金(编号:31960038)。
作者简介:杨文雅(1987—),女,宁夏银川人,硕士,讲师,主要从事园艺方向研究。E-mail:yzhch0619@126.com。
更新日期/Last Update: 2025-07-20