Do different plant host species influence the response of Santalum album under moisture deficit stress?

IF 2.2 3区 农林科学 Q2 AGRONOMY
S. B. Chavan, G. B. Rawale, A. R. Uthappa, C. B. Harisha, V. D. Kakade, A. S. Morade, S. S. Changan, A. R. Chichaghare, Bappa Das, Dinesh Jinger, P. S. Basavaraj, Dinesh Kumar Yadav, K. Ravi Kumar, R. R. Babar, K. S. Reddy
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Abstract

With high profitability, growing demand and lucrative market supported by favourable policies, sandalwood cultivation in farmland and agroforestry systems is attracting farmers. Nevertheless, host plant selection carries an important function in terms of supporting enhanced growth and resilience of Santalum album (sandalwood) under moisture stress conditions. This research assessed the effects of various host plants on key morphophysiological and biochemical characteristics of 2.5-year-old field-grown sandalwood under moisture-stress conditions. In addition, a Plant Health Index (PHI) was developed as an appropriate tool for an overall assessment of plant vitality. The maximum height (3.57 m) and leaf area (91.48 cm2) of sandalwood were recorded when grown with Leucaena leucocephala, whereas the highest girth (8.89 cm) was observed in sandalwood associated with Acacia nilotica. Chlorophyll content, Photosystem II (PSII) efficiency, and relative water content (RWC) showed significant variation, with Dalbergia sissoo (9.69 µg mg−1 FW) and Leucaena leucocephala (9.61 µg mg−1 FW) exhibiting higher chlorophyll levels, suggesting superior photosynthetic performance.. Biochemical analysis showed that proline and total free amino acid levels (essential for osmotic adjustment and stress tolerance) were highest in sandalwood grown with Leucaena leucocephala (89.02 µg mg−1 FW; 20.00 mg g−1 FW) and Dalbergia sissoo (84.77 µg mg−1 FW; 13.51 mg g−1 FW). Plant Health Index (PHI) identified Cajanus cajan, Leucaena leucocephala and Acacia nilotica as the most favourable hosts and thus increasing sandalwood’s resilience to moisture deficit. This research forms the basis for refining host-sandalwood interactions and sandalwood cultivation on marginal lands of Deccan plateau, India.

Graphical abstract

不同寄主植物种类是否影响桑雀对水分亏缺胁迫的响应?
由于盈利能力高、需求不断增长和有利政策支持的利润丰厚的市场,农田和农林业系统中的檀香种植正吸引着农民。然而,寄主植物选择在支持檀香在水分胁迫条件下的生长和恢复能力方面起着重要的作用。在水分胁迫条件下,研究了不同寄主植物对2.5年生大田檀香关键形态生理生化特性的影响。此外,还开发了植物健康指数(PHI),作为全面评估植物活力的适当工具。与合欢配种的檀香最高高度为3.57 m,叶面积为91.48 cm2,而与合欢配种的檀香最高周长为8.89 cm。叶绿素含量、光系统II (PSII)效率和相对含水量(RWC)存在显著差异,黄檀(9.69µg mg−1 FW)和银杏(9.61µg mg−1 FW)的叶绿素含量较高,表明其光合性能优越。生化分析结果表明,以合子(89.02µg mg−1 FW; 20.00 mg g−1 FW)和黄檀(84.77µg mg−1 FW; 13.51 mg g−1 FW)生长的檀香中,脯氨酸和总游离氨基酸水平(对渗透调节和抗逆性必需)最高。植物健康指数(PHI)鉴定出最有利的寄主是Cajanus cajan、Leucaena leucocephala和Acacia nilotica,从而提高了檀香对水分亏缺的适应能力。本研究为完善印度德干高原边缘土地上的宿主-檀香相互作用和檀香种植奠定了基础。图形抽象
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来源期刊
Agroforestry Systems
Agroforestry Systems 农林科学-林学
CiteScore
5.30
自引率
9.10%
发文量
78
审稿时长
4.5 months
期刊介绍: Agroforestry Systems is an international scientific journal that publishes results of novel, high impact original research, critical reviews and short communications on any aspect of agroforestry. The journal particularly encourages contributions that demonstrate the role of agroforestry in providing commodity as well non-commodity benefits such as ecosystem services. Papers dealing with both biophysical and socioeconomic aspects are welcome. These include results of investigations of a fundamental or applied nature dealing with integrated systems involving trees and crops and/or livestock. Manuscripts that are purely descriptive in nature or confirmatory in nature of well-established findings, and with limited international scope are discouraged. To be acceptable for publication, the information presented must be relevant to a context wider than the specific location where the study was undertaken, and provide new insight or make a significant contribution to the agroforestry knowledge base
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