Changes in Morpho-physiological and Yield Parameters of Rice (Oryza sativa L.) in Response to Ultraviolet-B (UV-B) Radiation

Wagh, Y. S.; Nandini, K.

doi:10.9734/ijecc/2019/v9i1230167

Cited by 4 publications

(2 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The decrease in Chl content caused by UV-B radiation may be due to inhibition of the biosynthesis of Chl or affecting the enzyme involved in the Chl biosynthetic pathway(Y.S. Wagh ,2019). In this study, the chloroplast structure of rice mesophyll cells changed under UV-B stress.…”

Section: Ultrastructure Of Chloroplasts Are Damaged Under Uv-b Stressmentioning

confidence: 68%

Effect of miR408 on photosynthesis of rice under enhanced UV-B radiation

Wang

et al. 2022

Preprint

View full text Add to dashboard Cite

UV-B stress has become one of the main abiotic stress factors threatening crop growth and development, and miR408 plays an important role in plant abiotic stress response. MiR408 is a type of endogenous non-coding small fragment single-stranded RNA, which is mainly found in eukaryotes and participates in the regulation of plant growth and development by responding to various stresses in a manner that negatively regulates the target gene. The effects of photosynthesis and expression levels of miR408-OE rice plants and knockout UCL8 plants under UV-B stress were investigated. The results showed that under UV-B enhanced radiation, the chlorophyll content, intercellular carbon dioxide concentration, net photosynthetic rate and stomatal conductance of the overexpressed miR408 plants were significantly reduced. Under UV-B enhanced radiation, chlorophyll fluorescence kinetic parameters such as Fv/Fm and qP overexpressing miR408 plants were reduced. UV-B significantly inhibited the activity of SOD, POD and CAT in overexpressing miR408 plants and significantly increased their H2O2 and MDA contents. Under UV-B stress treatment, the yield traits such as the number of grains, the number of tillers and the quality of dry matter of overexpressing miR408 plants were significantly reduced. Therefore, UV-B enhances the photosynthetic rate, photosynthetic performance and disruption of the antioxidant system balance of overexpressing miR408 plants, which leads to a decrease in yield. It is speculated that overexpression of miR408 reduced the tolerance of rice to UV-B radiation, that is miR408 may play a negative regulatory role in response to UV-B stress.

show abstract

Section: Ultrastructure Of Chloroplasts Are Damaged Under Uv-b Stressmentioning

confidence: 68%

Effect of miR408 on photosynthesis of rice under enhanced UV-B radiation

Wang

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…It also has certain scientific research foresight to ensure the sustainable and stable development of the local pigmented potatoes industry. Scientists have conducted in-depth and systematic studies on wheat, corn, and soybean effects of enhanced UV-B radiation at home and abroad ( Wagh and Nandini, 2019 ; Choi et al., 2022 ), but there were few reports on the effects of UV-B radiation on pigmented potatoes. Two pigmented potatoes cultivars with different biological characteristics were taken as the research objects in this experiment.…”

Section: Introductionmentioning

confidence: 99%

Different doses of UV-B radiation affect pigmented potatoes’ growth and quality during the whole growth period

Chen

Xiao

et al. 2023

Front. Plant Sci.

View full text Add to dashboard Cite

IntroductionUltraViolet- Biological (UV-B) plays an important role in plant growth and the formation of nutrients, especially secondary metabolites.MethodsTo investigate the phenotypic changes, physiological responses, and internal genes expression of potatoes under enhanced UV-B radiation, two Yunnan native pigmented potatoes varieties named “Huaxinyangyu” and “Jianchuanhong” were exposed to different UV-B doses during whole growth duration.ResultsPearson correlation analysis and principal component analysis showed that the agronomic characters (i.e. plant height, pitch, stem diameter, and root shoot ratio) of plants treated with low dose ultraviolet (T1) did not change significantly compared with the absence of ultraviolet radiation (CK), even unit yield increased slightly; Similarly, under low UV-B radiation, photosynthetic and physiological parameters (photosynthetic rate, stomatal conductance, respiration rate, and transpiration rate) of leaves were significantly increased. In addition, low-dose UV-B treatment promoted the synthesis of tuber nutrients (e.g. phenols, chlorogenic acids, flavonoids, vitamin C, anthocyanins) and increased the expression of structural genes for anthocyanin synthesis. The number of nutrients and gene expression in tubers raised by the “Huaxinyangyu” was the highest at 84 days, and “Jianchuanhong” was the highest at 72 days. However, the higher dose of UV-B radiation (T2) will cause greater damage to the pigmented potatoes plants, making the plants reduce the yield, and significantly reduce the tuber nutrients.DiscussionThis study showed that proper ultraviolet radiation will not harm pigmented potatoes, but also improve their oxidative stress tolerance, increase the structure genes expression of anthocyanins and continuously synthesize beneficial substances to improve the yield and quality of potato tubers.

show abstract