通过菌根化作用缓解好氧水稻缺磷状况的星光内酯 GR24

IF 4.8 Q1 MICROBIOLOGY
Debasis Mitra , Periyasamy Panneerselvam , Parameswaran Chidambaranathan , Amaresh Kumar Nayak , Ankita Priyadarshini , Ansuman Senapati , Pradeep Kumar Das Mohapatra
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引用次数: 0

摘要

支链内酯(SL)是一类新型植物激素,在调节植物生长促进、抗逆性和影响根瘤微生物组等各个方面发挥着重要作用。GR24 是一种人工合成的 SL 类似物,用于科学研究,以了解 SL 对植物的影响,并用作植物生长促进剂。本研究旨在用不同浓度的 GR24(0.1、0.5、1.0、5.0 和 10.0 µM,接种或不接种丛枝菌根真菌 (AMF),在缺磷条件下对选定的好氧水稻品种(CR Dhan 201、CR Dhan 204、CR Dhan 205 和 CR Dhan 207)、Kasalath-IC459373(耐磷对照)和 IR-36(易感磷对照)进行种子诱导,以了解菌根化对生长的促进作用和诱导效果。我们的研究结果表明,用 5.0 µM SL GR24 引种可提高 CR Dhan 205(88.91 %)的菌根化性能,其次是 CR Dhan 204 和 207,以及 CR Dhan 201(31.98 个孢子/10 克土壤)和 CR Dhan 207(30.29 个孢子/10 克土壤)的 AMF 孢子数量和水稻生长。研究表明,高反应性品种 CR Dhan 207 的 P 吸收率高于对照,其次是 CR Dhan 204、205、201 和 Kasalath IC459373。0 µM SL GR24 处理的品种 CR Dhan 205(其次是 CR Dhan 207 和 204)在植物生长、叶绿素含量和土壤功能特性(如酸碱磷酸酶活性、土壤微生物生物量碳(MBC)、脱氢酶活性(DHA)和二乙酸荧光素活性(FDA))方面表现最佳。总体而言,与对照组相比,用 SL GR24 干预 AMF 能显著提高植物生长、土壤酶活性和钾的吸收。在缺乏钾的条件下,用 5.0 µM 绞股蓝内酯 GR24 和 AMF 接种体进行种子诱导能显著提高水稻的有氧生长、钾吸收和土壤酶活性。在选定的好氧水稻品种 CR Dhan 207、CR Dhan 204 和 CR Dhan 205 中施用含 AMF 接种体的 SLs 配方,将在钾营养缺乏条件下的菌根化、生长和提高钾利用率方面发挥重要作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Strigolactone GR24-mediated mitigation of phosphorus deficiency through mycorrhization in aerobic rice

Strigolactone GR24-mediated mitigation of phosphorus deficiency through mycorrhization in aerobic rice

Strigolactones (SLs) are a new class of plant hormones that play a significant role in regulating various aspects of plant growth promotion, stress tolerance and influence the rhizospheric microbiome. GR24 is a synthetic SL analog used in scientific research to understand the effects of SL on plants and to act as a plant growth promoter. This study aimed to conduct hormonal seed priming at different concentrations of GR24 (0.1, 0.5, 1.0, 5.0 and 10.0 µM with and without arbuscular mycorrhizal fungi (AMF) inoculation in selected aerobic rice varieties (CR Dhan 201, CR Dhan 204, CR Dhan 205, and CR Dhan 207), Kasalath-IC459373 (P-tolerant check), and IR-36 (P-susceptible check) under phosphorus (P)-deficient conditions to understand the enhancement of growth and priming effects in mycorrhization. Our findings showed that seed priming with 5.0 µM SL GR24 enhanced the performance of mycorrhization in CR Dhan 205 (88.91 %), followed by CR Dhan 204 and 207, and AMF sporulation in CR Dhan 201 (31.98 spores / 10 gm soil) and CR Dhan 207 (30.29 spores / 10 g soil), as well as rice growth. The study showed that the highly responsive variety CR Dhan 207 followed by CR Dhan 204, 205, 201, and Kasalath IC459373 showed higher P uptake than the control, and AMF treated with 5.0 µM SL GR24 varieties CR Dhan 205 followed by CR Dhan 207 and 204 showed the best performance in plant growth, chlorophyll content, and soil functional properties, such as acid and alkaline phosphatase activity, soil microbial biomass carbon (MBC), dehydrogenase activity (DHA), and fluorescein diacetate activity (FDA). Overall, AMF intervention with SL GR24 significantly increased plant growth, soil enzyme activity, and uptake of P compared to the control. Under P-deficient conditions, seed priming with 5.0 µM strigolactone GR24 and AMF inoculum significantly increased selected aerobic rice growth, P uptake, and soil enzyme activities. Application of SLs formulations with AMF inoculum in selected aerobic rice varieties, CR Dhan 207, CR Dhan 204, and CR Dhan 205, will play an important role in mycorrhization, growth, and enhancement of P utilization under P- nutrient deficient conditions.

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来源期刊
Current Research in Microbial Sciences
Current Research in Microbial Sciences Immunology and Microbiology-Immunology and Microbiology (miscellaneous)
CiteScore
7.90
自引率
0.00%
发文量
81
审稿时长
66 days
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