Drought Response of Rice in Northeastern Thailand Assessed via Fourier Transform Infrared Spectroscopy

IF 2.1 Q2 PLANT SCIENCES

Acta Agrobotanica Pub Date : 2021-12-31 DOI:10.5586/aa.7421

P. Phansak, S. Siriwong, Nantawan Kanawapee, K. Thumanu, W. Gunnula, N. Buensanteai

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引用次数: 5

Abstract

Drought isa major constraint in many rainfed areas and affects rice yield. We aimed to characterize the physiological changes in rice in response to drought using Fourier transform infrared (FTIR) spectroscopy. Eighty rice landrace seedlings were subjected to drought in the greenhouse using a PEG 6000. Physiological parameters, including total chlorophyll content, relative water content, electrolyte leakage, and biochemical changes were evaluated. Based on the FTIR results, the landraces were divided into three main groups: tolerant, moderately tolerant, and susceptible. Principal component analysis revealed spectral differences between the control and drought stress treatment groups. Lipid, pectin, and lignin content increased after drought stress. The biochemical components of plants at different drought tolerance levels were also compared. The lipid (CH2 and CH3), lignin (C=C), pectin (C=O), and protein (C=O, N–H) contents were the highest in the drought-tolerant cultivars, followed by the moderately tolerant and susceptible cultivars, respectively. Cultivar 17 and 49 were the most tolerant, and the functional groups were identified and characterized using FTIR. Overall, these results will be useful in selecting parental cultivars for rice breeding programs.

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傅里叶变换红外光谱分析泰国东北部水稻对干旱的响应

干旱是许多雨养地区的主要制约因素，影响水稻产量。本研究旨在利用傅里叶变换红外光谱(FTIR)表征水稻对干旱的生理变化。80株地方水稻幼苗在温室中使用peg6000进行干旱处理。生理参数包括总叶绿素含量、相对含水量、电解质泄漏和生化变化。根据FTIR结果，将地方品种分为耐受性、中等耐受性和易感三个主要组。主成分分析揭示了干旱胁迫处理组与对照组之间的光谱差异。干旱胁迫后，脂质、果胶和木质素含量增加。比较了不同抗旱性植株的生化成分。耐旱品种的脂质(CH2和CH3)、木质素(C=C)、果胶(C=O)和蛋白质(C=O, N-H)含量最高，中等耐旱品种次之，敏感品种次之。品种17和49的耐受性最强，利用FTIR对其官能团进行了鉴定和表征。总之，这些结果将有助于水稻育种计划的亲本品种选择。

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来源期刊

Acta Agrobotanica Agricultural and Biological Sciences-Agronomy and Crop Science

CiteScore

2.90

自引率

25.00%

发文量

审稿时长

16 weeks

期刊介绍： The Acta Agrobotanica publishes mainly significant, original research papers presenting the results new to the biology of cultivable or wild plants accompanying crops. The submissions dedicated particularly to flora and phytocenoses of anthropogenically transformed areas, bee pastures, nectariferous and polleniferous taxa, plant-pollinator relationships, urban and rural habitats for entomofauna, cultivated plants, weeds, aerobiology, plant pathogens and parasites are encouraged and accepted. Besides the original research papers, authors may submit short communications and reviews. The journal also publishes the invited papers in case of new developments in plant science. All submissions must be written in good English, which is solely a responsibility of the authors.