高级检索+
伊力努尔·艾力, 陈晓楠, 高文礼, 王海鸥, 麦格皮热提古丽·达吾提, 马晓东. AMF-多枝柽柳幼苗共生体对干旱胁迫的生理响应[J]. 植物科学学报, 2022, 40(5): 724-732. DOI: 10.11913/PSJ.2095-0837.2022.50724
引用本文: 伊力努尔·艾力, 陈晓楠, 高文礼, 王海鸥, 麦格皮热提古丽·达吾提, 马晓东. AMF-多枝柽柳幼苗共生体对干旱胁迫的生理响应[J]. 植物科学学报, 2022, 40(5): 724-732. DOI: 10.11913/PSJ.2095-0837.2022.50724
Aili·Yilinuer, Chen Xiao-Nan, Gao Wen-Li, Wang Hai-Ou, Dawuti·Maigepiretiguli, Ma Xiao-Dong. Physiological responses of arbuscular mycorrhizal fungus- Tamarix ramosissima Ledeb. seedling symbionts to drought stress[J]. Plant Science Journal, 2022, 40(5): 724-732. DOI: 10.11913/PSJ.2095-0837.2022.50724
Citation: Aili·Yilinuer, Chen Xiao-Nan, Gao Wen-Li, Wang Hai-Ou, Dawuti·Maigepiretiguli, Ma Xiao-Dong. Physiological responses of arbuscular mycorrhizal fungus- Tamarix ramosissima Ledeb. seedling symbionts to drought stress[J]. Plant Science Journal, 2022, 40(5): 724-732. DOI: 10.11913/PSJ.2095-0837.2022.50724

AMF-多枝柽柳幼苗共生体对干旱胁迫的生理响应

Physiological responses of arbuscular mycorrhizal fungus- Tamarix ramosissima Ledeb. seedling symbionts to drought stress

  • 摘要: 丛枝菌根真菌(Arbuscular mycorrhizal fungi,AMF)是一类能与绝大多数维管植物形成互惠共生关系的土壤微生物。为了探究塔里木河下游荒漠河岸林优势种多枝柽柳(Tamarix ramosissima Ledeb.)幼苗-AMF共生体应答干旱胁迫的反应,本研究设置了正常水分(土壤相对含水量为(70 ±5)%)和干旱胁迫(土壤相对含水量为(30 ±5)%)两种处理,探讨AMF接种与否对多枝柽柳幼苗生长势及生理指标的影响。结果显示:(1)干旱胁迫下,与未接种组相比,接种AMF的多枝柽柳幼苗的株高、基径、冠幅相对增长率分别增加24.6%、9.1%、32.3%;(2)与正常水分处理组相比,干旱胁迫下,多枝柽柳幼苗的菌根侵染率降低了26.47%;(3)与未接种的幼苗相比,AMF-多枝柽柳幼苗共生体在干旱胁迫下,抗氧化酶(SOD、POD、CAT)活性与渗透调节物质(Pro、SS)含量升高,丙二醛含量降低。

     

    Abstract: Arbuscular mycorrhizal fungi (AMF), as a class of soil microorganisms and green fertilizers, can form mutualistic symbionts with most vascular plants to promote growth under stress. Here, we explored the physiological responses of AMF-Tamarix ramosissima Ledeb. seedling symbionts to drought stress to study drought resistance of Tamarix ramosissima seedlings, a dominant species in the desert riparian forests in the lower reaches of the Tarim River. Two moisture gradients and two inoculation treatments were established. The moisture gradient included normal moisture (soil relative moisture content (70 ±5)%) and drought stress (soil relative moisture content (30 ±5)%) treatments. Inoculation included AMF inoculation treatment and no inoculation control. Results showed that:(1) Compared with the control, plant height, base diameter, and crown width increased in the Tamarix ramosissima seedlings inoculated with AMF by 24.6%, 9.1%, and 32.3%, respectively, under drought stress. (2) Compared with normal moisture treatment, the mycorrhizal infection rate of the Tamarix ramosissima seedlings decreased by 26.47% under drought stress. (3) Compared with the uninoculated plants, malondialdehyde (MDA) content decreased, superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) activity increased, and proline and soluble sugar content increased in the Tamarix ramosissima seedlings inoculated with AMF.

     

/

返回文章
返回