[1]马步东,黄海霞*,陆刚,等. 土壤干旱过程对裸果木荧光特性及渗透调节物质的影响[J].西北林学院学报,2022,37(3):30-36.[doi:10.3969/j.issn.1001-7461.2022.03.05]
　MA Bu-dong,HUANG Hai-xia*,LU Gang,et al. Effects of Soil Drought on Fluorescence Characteristics and Osmotic Regulatory Substances of Gymnocarpos przewalskii[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2022,37(3):30-36.[doi:10.3969/j.issn.1001-7461.2022.03.05]
点击复制

 土壤干旱过程对裸果木荧光特性及渗透调节物质的影响()
分享到：

《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第37卷
期数:
2022年第3期
页码:
30-36
栏目:
出版日期:
2022-05-31

文章信息/Info

Title:
 Effects of Soil Drought on Fluorescence Characteristics and Osmotic Regulatory Substances of Gymnocarpos przewalskii
文章编号:
1001-7461(2022)03-0030-07
作者:
 马步东; 黄海霞*; 陆刚; 周晓瑾; 张君霞
 (甘肃农业大学 林学院，甘肃 兰州 730070)
Author(s):
 MA Bu-dong; HUANG Hai-xia*; LU Gang; ZHOU Xiao-jin; ZHANG Jun-xia
 (College of Forestry,Gansu Agricultural University,Lanzhou 730070,Gansu,China)
关键词:
 ; 裸果木; 土壤干旱; 荧光参数; 渗透调节物质
Keywords:
 ; Gymnocarpos przewalskii;  soil drought;  fluorescence parameter;  osmoregulatory substance
分类号:
S792.99
DOI:
10.3969/j.issn.1001-7461.2022.03.05
文献标志码:
A
摘要:
 以2年生裸果木盆栽幼苗为试验材料，在土壤干旱过程中，监测叶片荧光参数和渗透调节物质的含量，揭示裸果木幼苗对水分变化的生理响应机制，以期为裸果木抗旱机理的研究提供理论依据。结果表明，初始荧光(Fo)和非光化学猝灭(NPQ-Lss)系数随土壤水分含量的减少而持续上升；最大荧光(Fm)、原初光能潜在活性(Fv/Fo)、光化学最大量子产量(Fv/Fm)、光化学猝灭(qP-Lss)系数和稳态光量子效率(QY-Lss)随土壤水分含量的减少而呈现下降的趋势；荧光衰减率(Rfd-Lss)在土壤相对含水量达到23.23%时迅速下降。土壤水分含量减少时，叶片PSⅡ反应中心的活性降低，光合作用的原初反应过程受抑制，但叶片能通过显著提高NPQ-Lss，消耗过剩的光能来减轻干旱对光合机构的伤害。随着土壤干旱程度的逐渐加剧，脯氨酸(proline，Pro)含量显著积累，增加幅度却逐渐减小；可溶性蛋白(soluble protein，SP)含量先下降，当土壤相对含水量低于31.38%时开始显著增加；可溶性糖(soluble sugar，SS)含量持续增加。在干旱过程中，裸果木叶片能够通过积累Pro、SS和SP，来降低渗透势，起到一定的抗旱作用。
Abstract:
 To provide theoretical basis for the study of drought-resistance mechanism of Gymnocarpos przewalskii,the seedlings of biennial G.przewalskii were used as experimental materials to investigate the physiological response mechanism of the seedlings to moisture variation during soil drought by monitoring chlorophyll fluorescence parameters and osmoregulation substance content.The results showed that the initial fluorescence (Fo) and non-photochemical quenching coefficients (NPQ-Lss) increased with the decrease of soil water content.The maximum fluorescence (Fm),primary light energy potential activity (Fv/Fo),photochemical maximum quantum yield (Fv/Fm),photochemical quenching coefficient (qP-Lss) and steady-state light quantum efficiency (QY-Lss) reduced with the decrease of soil water content; the fluorenscece decay rate dropped significantly when the relative content of soil reached 23.23%.With the decrease of soil water content,the activity of PSII reaction center in leaves decreased,and the primary reaction process of photosynthesis was inhibited.However,the leaves could significantly increase NPQ-Lss and consume excess light energy to reduce the damage of drought to photosynthetic apparatus.With the gradual intensification of soil drought,proline (Pro) content accumulated significantly,but the increasing range decreased gradually.The content of soluble protein (SP) decreased first,and then increased significantly when the soil relative water content was lower than 31.38%.Soluble sugar (SS) content increase continuously.In the process of drought,the leaves of G.przewalskii could accumulate Pro,SS and SP to reduce the osmotic potential and play a certain role in drought resistance.

相似文献/References:

[1]李亚藏,梁彦兰,王庆成. 铅对山梨和山荆子光合作用和叶绿素荧光特性的影响[J].西北林学院学报,2012,27(05):21.
　LI Ya-cang,LIANG Yan-lan,WANG Qing-cheng. Influence of Pb on Photosynthesis and Chlorophyll Fluorescence Characteristics in Pyrus ussuriensis and Malus baccata [J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2012,27(3):21.
[2]张小咏,李佳,杨艳昭,等. 基于SWAT模型的长江源区径流模拟[J].西北林学院学报,2012,27(05):38.
　ZHANG Xiao-yong,LI Jia,YANG Yan-zhao,et al. Runoff Simulation of the Catchment of the Headwaters of the Yangtze River Based on SWAT Model[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2012,27(3):38.
[3]杨红旗,陈广辉,王金林. PVAc改性酚醛树脂制备铝木复合材料研究[J].西北林学院学报,2013,28(01):170.[doi:10.3969/j.issn.1001-7461.2013.01.34]
　YANG Hong-qi,CHEN Guang-hui,WANG Jin-lin. PF Adhesive Modified by PVAc for Manufacturing Technology of Decorative Fiberboard with Aluminum Foils[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2013,28(3):170.[doi:10.3969/j.issn.1001-7461.2013.01.34]
[4]江涛,李秀荣,谢延军,等. 微波预处理对巨尾桉木材渗透性的影响[J].西北林学院学报,2013,28(01):174.[doi:10.3969/j.issn.1001-7461.2013.01.35]
　JIANG Tao,LI Xiu-rong,XIE Yan-jun,et al. Effects of Microwave Pretreatment on the Permeability of Eucalyptus grandis×Eucalyptus urophylla[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2013,28(3):174.[doi:10.3969/j.issn.1001-7461.2013.01.35]
[5]牛晓霆,王逢瑚,曹新民. 明清家具匠师原木下料的工艺原则及措施[J].西北林学院学报,2013,28(01):178.[doi:10.3969/j.issn.1001-7461.2013.01.36]
　NIU Xiao-ting,WANG Feng-hu,CAO Xin-min. Techniques and Principles of Log Cuttings of Furniture Makers in Ming and Qing Dynasties[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2013,28(3):178.[doi:10.3969/j.issn.1001-7461.2013.01.36]
[6]吕金阳,覃卓凯,舒辉,等. 银杉木材构造美学价值[J].西北林学院学报,2013,28(01):183.[doi:10.3969/j.issn.1001-7461.2013.01.37]
　LV Jin-yang,QIN Zhuo-kai,SHU Hui,et al. Esthetical Values in Wood Structure of Cathaya argyrophylla[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2013,28(3):183.[doi:10.3969/j.issn.1001-7461.2013.01.37]
[7]杨艳红,张海敏,孙景荣. 基于传统文化视角的现代家具设计探析[J].西北林学院学报,2013,28(01):188.[doi:10.3969/j.issn.1001-7461.2013.01.38]
　YANG Yan-hong,ZHANG Hai-min,SUN Jing-rong. Study of Modern Furniture Design Based on Traditional Culture[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2013,28(3):188.[doi:10.3969/j.issn.1001-7461.2013.01.38]
[8]黄圣游,叶喜. 新中式家具“中式”传统的界定[J].西北林学院学报,2013,28(01):192.[doi:10.3969/j.issn.1001-7461.2013.01.39]
　HUANG Sheng-You,YE Xi. Definition of Traditional Element in New Chinese Style Furniture[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2013,28(3):192.[doi:10.3969/j.issn.1001-7461.2013.01.39]
[9]韩维生,赵明磊,王宏斌. 基于阈限理论的设计尺度体系[J].西北林学院学报,2013,28(01):197.[doi:10.3969/j.issn.1001-7461.2013.01.40]
　HAN Wei-sheng,ZHAO Ming-lei,WANG Hong-bin. Design Scale System Based on Threshold Theory[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2013,28(3):197.[doi:10.3969/j.issn.1001-7461.2013.01.40]
[10]宋杰,侯建军,申黎明. 按摩椅按摩头包覆层对按摩舒适性的影响[J].西北林学院学报,2013,28(01):202.[doi:10.3969/j.issn.1001-7461.2013.01.41]
　SONG Jie,HOU Jian-jun,SHEN Li-ming. Influence of Massager Coat Layer of Massage Chairs on the Degree of Comfort[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2013,28(3):202.[doi:10.3969/j.issn.1001-7461.2013.01.41]
[11]闫好原,许明*,曾新德,等. 石羊河下游裸果木群落生态位特征研究[J].西北林学院学报,2020,35(6):89.[doi:10.3969/j.issn.1001-7461.2020.06.12]
　YAN Hao-yuan,XU Ming*,ZENG Xin-de,et al. Niche Characteristics of Gymnocarpos przewalskii Community in the Lower Reaches of Shiyang River[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2020,35(3):89.[doi:10.3969/j.issn.1001-7461.2020.06.12]

备注/Memo

备注/Memo:
 收稿日期：2021-05-18修回日期：2021-08-29
基金项目：甘肃农业大学学科建设专项基金（GSAU-XKJS-2018-110）；甘肃省自然科学基金（17JR5RA144）。
第一作者：马步东。研究方向：植物逆境生理生态。E-mail:1697073711@qq.com
*通信作者：黄海霞，副教授，博士。研究方向：植物逆境生理生态。E-mail:1057821914@qq.com
更新日期/Last Update: