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

Tisarum, Rujira; Pongprayoon, Wasinee; Sithtisarn, Sayamon; Sampumphuang, Thapanee; Sotesaritkul, Thanyaporn; Datta, Avishek; Singh, Harminder Pal; Cha–um, Suriyan

doi:10.1007/s00709-021-01719-w

Cited by 8 publications

(3 citation statements)

References 77 publications

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“…This difference between the findings, which stated that plant height and panicle length had a positive direct effect on yields, and the one that revealed that they had no influence on yields, may be due to the severity of the stress in situ. Similar results were found between grain yield and iron toxicity, while confirming that leaf bronzing score is a secondary trait of an indicator in selection for iron toxicity tolerance (18). Several genes, influenced by a wide range of variables, result in different behaviors, making all the above patterns typical.…”

Section: Discussionsupporting

confidence: 77%

“…This makes more Fe toxicity available [ 12 ]. According to several studies [ 17 , 18 ], the extra Fe 2+ is transferred from the root to the shoot and causes leaf bronzing, cellular oxidative harm, nutritional deficit, and reduced rice development. Rice exhibits several defensive strategies against Fe toxicity in diverse ways at different developmental stages [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

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Field Evaluation of Rice Lines Derived from Suakoko 8 X Bao Thai for Iron Tolerance in the South Saharan African Farming System

Sikirou,

Shittu,

Moukoumbi

et al. 2024

Plants

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Rice is a major grain crop in numerous countries. In lowland areas, high iron levels in the soil severely hinder its cultivation. The current study explored high-yielding and Fe-toxicity-tolerant irrigated lowland rice (340 lines) among a population derived from a cross between Suakoko 8 and Bao Thai in Edozighi and Ibadan, Nigeria. In contrast to Ibadan, the soils in Edozighi contain a significant amount of iron. For the stated purpose, we carried out a two-year experiment using an alpha lattice design. The data showed significant differences between genotypes for the days to heading, plant height, number of tillers per plant, number of panicles per plant, panicle length, and grain yield. The results revealed that multiple characteristics had both direct and indirect effects on cultivated rice yields. There was a direct and positive influence on the number of days in the 50% heading period (0.31), a direct and negative effect on plant height (−0.94), a direct and positive effect on tiller and panicle numbers, and a direct but negative effect on panicle length (−0.56). The leaf bronzing score was adversely correlated with yield, panicle length, and plant height, while it was positively correlated with the number of panicles, tillers, and days to heading. The findings showed significant changes in yield and yield characteristics between genotypes. Grain yields ranged from 283 to 11,700 kg/ha in the absence of iron in the soil, contrary to 0 to 8230 kg/ha in soil with iron toxicity, with losses estimated between 6 and 94%, demonstrating the resulting disaster. In contrast to the elite parents and varieties used in this study, the ten top genotypes exhibited smaller losses in yield. The authors strongly recommend using these lines for further studies as donors or releasing them in farmer fields in Africa.

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Section: Discussionsupporting

confidence: 77%

Section: Introductionmentioning

confidence: 99%

Field Evaluation of Rice Lines Derived from Suakoko 8 X Bao Thai for Iron Tolerance in the South Saharan African Farming System

Sikirou,

Shittu,

Moukoumbi

et al. 2024

Plants

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“…The availability of Fe toxicity tend to increase by the conversion of Fe 3+ to the reduced ferrous form of Fe 2+ under waterlogged acidic soils, anaerobic condition found in tropical lowland rice fields ( Rasheed et al, 2020 ). The excess Fe 2+ is transported from the root to the shoot and leads to leaf discoloration (bronzing), cellular oxidative damage, nutrient deficiency, and stunted growth of rice ( Sikirou et al, 2016 ; Wu et al, 2017 ; Turhadi et al, 2019 ; Tisarum et al, 2022 ). Among the physiological and agronomic responses to Fe toxicity, several genes have been involved in multiple responses, including Fe uptake, translocation, subcellular Fe translocation, and Fe regulation ( Kobayashi and Nishizawa, 2012 ; Rasheed et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Determination of traits responding to iron toxicity stress at different stages and genome-wide association analysis for iron toxicity tolerance in rice (Oryza sativa L.)

Theerawitaya

Wanchana²,

Ruanjaichon³

et al. 2022

Front. Plant Sci.

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Rice is the staple food for more than half of the world’s population. Iron toxicity limits rice production in several regions of the world. Breeding Fe-tolerant rice varieties is an excellent approach to address the problem of Fe toxicity. Rice responds differently to Fe toxicity at different stages. Most QTLs associated with Fe toxicity have been identified at the seedling stage, and there are very few studies on Fe toxicity across different stages. In this study, we investigated agro-morphological and physiological traits in response to Fe toxicity in a rice diversity panel at seedling, vegetative, and reproductive stages and applied GWAS to identify QTLs/genes associated with these traits. Among agro-morphological and physiological parameters, leaf bronzing score (LBS) is a key parameter for determining Fe toxicity response at all stages, and SDW could be a promising parameter at the seedling stage. A total of 29 QTLs were identified on ten chromosomes. Among them, three colocalized QTLs were identified on chromosome 5, 6, and 11. Several QTLs identified in this study overlapped with previously identified QTLs from bi-parental QTL mapping and association mapping. Two genes previously reported to be associated with iron homeostasis were identified, i.e., LOC_Os01g72370 (OsIRO2, OsbHLH056) and LOC_Os04g38570 (OsABCB14). In addition, based on gene-based haplotype analysis, LOC_Os05g16670 was identified as a candidate gene for the colocalized QTL on chromosome 5 and LOC_Os11g18320 was identified as a candidate gene for the colocalized QTL on chromosome 11. The QTLs and candidate genes identified in this study could be useful for rice breeding programs for Fe toxicity tolerance.

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Aluminum uptake, translocation, physiological changes, and overall growth inhibition in rice genotypes (Oryza sativa) at vegetative stage

Phukunkamkaew

Tisarum

Sotesaritkul

et al. 2022

Environ Geochem Health

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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

Cited by 8 publications

References 77 publications

Field Evaluation of Rice Lines Derived from Suakoko 8 X Bao Thai for Iron Tolerance in the South Saharan African Farming System

Field Evaluation of Rice Lines Derived from Suakoko 8 X Bao Thai for Iron Tolerance in the South Saharan African Farming System

Determination of traits responding to iron toxicity stress at different stages and genome-wide association analysis for iron toxicity tolerance in rice (Oryza sativa L.)

Aluminum uptake, translocation, physiological changes, and overall growth inhibition in rice genotypes (Oryza sativa) at vegetative stage

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