Interaction between Rhizobacteria and Andrographis paniculata Under Water Limitation

Q3 Environmental Science Environment and Natural Resources Journal Pub Date : 2024-02-14 DOI:10.32526/ennrj/22/20230310
Butsakorn Yodphet, N. Jangpromma, Wanwipa Kaewpradit Polpinit, N. Riddech
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Abstract

Drought stress is a major agricultural problem that leads to increased accumulation of ethylene in plants. It also has negative effects on plant productivity and growth. Andrographis paniculate is an important herb widely used in medical applications to inhibit diseases caused by viruses. In order to improve the production quality and growth of the A. paniculata, ACC-deaminase plant growth-promoting rhizobacteria were isolated from rice rhizosphere soil. All bacterial isolates were screened for their plant growth-promoting properties, including ACC deaminase, IAA production, biofilm formation, and exopolysaccharide production. Among the bacterial isolates, Rh-01 and Rh-22 exhibited positive results (cutting-edge) in all tests and were identified as Paenibacillus polymyxa Rh-01 and Stenotrophomonas maltophilia Rh-22, respectively. These strains were selected for further pot experiment study. Our results revealed that treatment with chemical fertilizer showed the highest potential to promote A. paniculata seedlings under normal moisture conditions. However, under water limitation conditions, the application of ACC-deaminase plant growth-promoting rhizobacteria led to a higher chlorophyll content compared to the control treatment. In addition, under normal irrigation conditions, plant growth promoting rhizobacterial increased relative water content and total biomass. In terms of plant stress markers, the proline content in Andrographis paniculate’s seedling stage was low under water limitation conditions. In conclusion, to enhance the growth of A. paniculate seedlings during water limitation stress, a combination of microbial biofertilizers and chemical fertilizers is beneficial.
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根瘤菌与穿心莲在水分限制条件下的相互作用
干旱胁迫是一个主要的农业问题,它会导致植物体内乙烯积累增加。它还会对植物的生产力和生长产生负面影响。穿心莲是一种重要的草本植物,广泛应用于医疗领域,可抑制病毒引起的疾病。为了改善穿心莲的生产质量和生长状况,研究人员从水稻根瘤土壤中分离出 ACC-脱氨酶植物生长促进根瘤菌。对所有细菌分离物的植物生长促进特性进行了筛选,包括 ACC 脱氨酶、IAA 产量、生物膜形成和外多糖产量。在细菌分离物中,Rh-01 和 Rh-22 在所有测试中均表现出阳性结果(尖端),并分别被鉴定为多粘毛芽孢杆菌 Rh-01 和嗜麦芽血单胞菌 Rh-22。这些菌株被选作进一步的盆栽实验研究。我们的研究结果表明,在正常水分条件下,化肥处理对圆锥花序幼苗的促进作用最大。然而,在水分限制条件下,与对照处理相比,施用 ACC-脱氨酶植物生长促进根瘤菌能使叶绿素含量更高。此外,在正常灌溉条件下,植物生长促进根瘤菌提高了相对含水量和总生物量。在植物胁迫标记方面,在水分限制条件下,穿心莲幼苗期的脯氨酸含量较低。总之,在水分限制胁迫条件下,将微生物生物肥料和化学肥料结合使用有利于促进穿心莲幼苗的生长。
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来源期刊
Environment and Natural Resources Journal
Environment and Natural Resources Journal Environmental Science-Environmental Science (all)
CiteScore
1.90
自引率
0.00%
发文量
49
审稿时长
8 weeks
期刊介绍: The Environment and Natural Resources Journal is a peer-reviewed journal, which provides insight scientific knowledge into the diverse dimensions of integrated environmental and natural resource management. The journal aims to provide a platform for exchange and distribution of the knowledge and cutting-edge research in the fields of environmental science and natural resource management to academicians, scientists and researchers. The journal accepts a varied array of manuscripts on all aspects of environmental science and natural resource management. The journal scope covers the integration of multidisciplinary sciences for prevention, control, treatment, environmental clean-up and restoration. The study of the existing or emerging problems of environment and natural resources in the region of Southeast Asia and the creation of novel knowledge and/or recommendations of mitigation measures for sustainable development policies are emphasized. The subject areas are diverse, but specific topics of interest include: -Biodiversity -Climate change -Detection and monitoring of polluted sources e.g., industry, mining -Disaster e.g., forest fire, flooding, earthquake, tsunami, or tidal wave -Ecological/Environmental modelling -Emerging contaminants/hazardous wastes investigation and remediation -Environmental dynamics e.g., coastal erosion, sea level rise -Environmental assessment tools, policy and management e.g., GIS, remote sensing, Environmental -Management System (EMS) -Environmental pollution and other novel solutions to pollution -Remediation technology of contaminated environments -Transboundary pollution -Waste and wastewater treatments and disposal technology
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