Multifaceted response mechanisms of Oryza sativa L. 'KDML105' to high arsenite and arsenate stress levels.

Toxicity resulting from high levels of inorganic arsenic (iAs), specifically arsenite (AsIII) and arsenate (AsV), significantly induces oxidative stress and inhibits the growth of rice plants in various ways. Despite its economic importance and significance as a potent elite trait donor in rice breeding programmes, Khao Dawk Mali 105 (KDML105) has received limited attention regarding its responses to As stress. Therefore, this study aimed to comprehensively investigate how KDML105 responds to elevated AsIII and AsV stress levels.

Phosphoprotein Profile of Rice ( L.) Seedlings under Osmotic Stress after Pretreatment with Chitosan.

This study aims to identify novel chitosan (CTS)-responsive phosphoproteins in Leung Pratew 123 (LPT123) and Khao Dawk Mali 105 (KDML105) as drought-sensitive rice cultivars and differences in the CTS response. Rice seeds were soaked in CTS solution before germination, and 2- and 4-week-old rice seedlings sprayed with CTS before osmotic stress comprised the following four groups: (1) seedlings treated with distilled water; (2) seedlings treated with CTS; (3) seedlings pretreated with distilled water and subjected to osmotic stress; and (4) seedlings pretreated with CTS and subjected to osmotic stress. Phosphoproteins of leaf tissues were enriched using immobilized metal affinity chromatography (IMAC) before tryptic digestion and analysis via LC-MS.

Expression levels of genes involved in metal homeostasis, physiological adaptation, and growth characteristics of rice (Oryza sativa L.) genotypes under Fe and/or Al toxicity.

Acid sulphate soil contains high amounts of iron (Fe) and aluminum (Al), and their contamination has been reported as major problems, especially in rainfed and irrigated lowland paddy fields. Rice is sensitive to Fe and Al grown in acid soil (pH < 5.5), leading to growth inhibition and grain yield loss.

Evaluation and clustering on salt-tolerant ability in rice genotypes ( L. subsp. ) using multivariate physiological indices.

Salinity is a major abiotic stress that affects plant growth and development, especially in rice crop as it is a salt susceptible crop. Therefore, a wide range of rice genetic resources are screened in the germplasm banks to identify salt tolerant cultivars. The objective of this investigation was to develop effective indices for the classification of salt tolerant rice genotypes among Pathumthani 1, Khao Dawk Mali 105 (KDML 105), RD31, RD41, Suphanburi 1, RD43, RD49 and Riceberry.