Response of two cultivars of Phaseolus vulgaris L. (French beans) plants exposed to enhanced UV-B radiation under mountain ecosystem

Raghuvanshi, Rashmi; Sharma, Rajesh

doi:10.1007/s11356-015-5332-7

Cited by 11 publications

(8 citation statements)

References 42 publications

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“…Despite the photoprotective mechanism, a reduction of chlorophyll a and carotenoids content was observed, a possible consequence of the high amount of energy released by UV-B radiation that reaches the leaves causing overload of photosynthetic processes and low CO2 assimilation yield. The reduction of chlorophyll a and carotenoids, also observed by Raghuvanshi and Sharma (2016) in bean plants, probably is related with the decrease in photosynthesis of plants treated with UV-B, since no changes were observed in stomatal conductance.…”

Section: Discussionmentioning

confidence: 76%

“…The reduction of dry and fresh leaf mass can be explained as a reaction to stress caused by UV-B radiation in plant development and metabolism (Boeger and Poulson, 2006). In addition, since UV-B radiation can adversely affect cell division, this effect possibly influences the leaf area reduction (Nogues et al, 1998;Raghuvanshi and Sharma, 2016). Concomitantly, the smaller expansion in epidermal cells (observed by the smaller epidermis thickness in the adaxial and abaxial surfaces) can lead to a reduction in leaf area.…”

Section: Discussionmentioning

confidence: 99%

“…The reduction in leaf area associated with the lower concentration of photosynthetic pigments seems to be the cause of the decrease in growth and the reduction of stem length and root dry mass verified under UV-B radiation treatment in P. vulgaris. These factors can lead to lower absorption of sunlight, as well as affect photosynthetic activity, leading to a decrease in photosynthesis, indirectly affecting plant growth (Raghuvanshi and Sharma, 2016).…”

Section: Discussionmentioning

confidence: 99%

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How does UV-B radiation affect the initial growth of common bean (Phaseolus vulgaris L.)? Physiological and structural aspects

Wanzeler

Zanetti

Fantinato

et al. 2019

BJD

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ABCTRACTIncreased UV-B radiation, a topic of concern due to climate change, can affect plant development through structural and physiological changes. Common bean (Phaseolus vulgaris L.) is a legume of great economic relevance, being one of the basic components of the human population's diet. Seeds of P. vulgaris var. Carioca were sown and grown in a growth chamber, and at 12 days of age were exposed for 15 min daily to UV-B radiation for a period of 14 days. Growth, leaf anatomy, gas exchange and pigments were evaluated. It was observed that UV-B radiation negatively affected the initial growth of bean plants, which had a reduction in height, number of leaves, fresh and dry leaf masses, leaf area, as well as reduction of stem and root dry masses. There was a reduction in the epidermis thickness, increase in the thickness of the palisade parenchyma and the leaf blade. It was verified yet reduction of the photosynthetic and photoprotectors pigments, reduction of the photosynthetic rate and alterations on the absorbent compounds of the UV-B radiation. The results obtained showed that the increase in UV-B radiation was harmful to the initial development of this crop.Palavras-chave: Agriculture, Anatomy, Beans, Pigments. RESUMOO aumento da radiação UV-B, tema preocupante em virtude das mudanças climáticas, pode afetar o desenvolvimento das plantas, por meio de mudanças estruturais e fisiológicas. O feijoeiro-comum (Phaseolus vulgaris L.) é uma leguminosa de grande relevância econômica, sendo um dos componentes básicos da alimentação humana. Sementes de P. vulgaris var. Carioca foram germinadas e cultivadas em uma câmara de crescimento, sendo aos 12 dias de idade expostas a 15 min diários de radiação UV-B, por um período de 14 dias. Foram avaliados crescimento, anatomia foliar, trocas gasosas e pigmentos. Observou-se que a radiação UV-B afetou negativamente o crescimento inicial do feijoeiro, o qual teve redução em altura, número de folhas, massa fresca, massa seca e área foliares, bem como, redução da massa seca de caule e raiz. Houve redução na espessura da epiderme e aumento nas espessuras do parênquima paliçádico e do limbo. Verificou-se, ainda, redução dos teores de pigmentos fotossintéticos e fotoprotetores, redução da taxa fotossintética e alterações nos compostos absorventes da radiação UV-B. Os resultados obtidos mostraram que o aumento da radiação UV-B foi prejudicial para o desenvolvimento inicial desta cultura.

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Section: Discussionmentioning

confidence: 76%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

How does UV-B radiation affect the initial growth of common bean (Phaseolus vulgaris L.)? Physiological and structural aspects

Wanzeler

Zanetti

Fantinato

et al. 2019

BJD

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“…Similar UVB-induced inhibition of photosynthesis resulting from chlorophylls degradation was also observed in some cultivars of quinoa 15 , 23 , 24 . In addition, enhanced UVB radiation can not only cause the reduction of chlorophylls, but also of carotenoids as reported in several crop species 25 , 26 . In this study, exposure to higher UVB irradiation (18.24 kJ m −2 dose) slightly reduced carotenoids content in comparison to chlorophylls, as reflected by the significant increase of the Carotenoids/Chlorophylls ratio.…”

Section: Discussionmentioning

confidence: 81%

Physiological effects of short acute UVB treatments in Chenopodium quinoa Willd

Reyes

Scartazza

Castagna

et al. 2018

Sci Rep

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Increased ultraviolet B (UVB) radiation due to global change can affect plant growth and metabolism. Here, we evaluated the capacity of quinoa to resist under short acute UVB irradiation. Quinoa was daily exposed for 30 or 60 min to 1.69 W m−2 UVB. The results showed that 30 min exposure in 9 d-course did not cause severe alterations on photosynthetic pigments and flavonoids, but a significant increase of antioxidant capacity was observed. Otherwise, 60 min UVB in 5 d-course reduced almost all these parameters except for an increase in the de-epoxidation of xanthophyll cycle pigments and led to the death of the plants. Further studies of gas exchange and fluorescence measurements showed that 30 min UVB dramatically decrease stomatal conductance, probably associated to reactive oxygen species (ROS) production. Inhibition of photosynthetic electron transport was also observed, which could be a response to reduce ROS. Otherwise, irreversible damage to the photosynthetic apparatus was found with 60 min UVB probably due to severe ROS overproduction that decompensates the redox balance inducing UVB non-specific signaling. Moreover, 60 min UVB compromised Rubisco carboxylase activity and photosynthetic electron transport. Overall, these data suggest that quinoa modulates different response mechanisms depending on the UVB irradiation dosage.

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“…In greenhouse cultivation, ultraviolet irradiation, which is considered to increase RS activity, is decreased (Raghuvanshi and Sharma, 2016). In contrast, plants receive more direct sunlight in open-field cultivation than in greenhouse cultivation, and the ascorbic acid content in tomatoes was higher in open-field cultivation (Dumas et al, 2003).…”

Section: Difference In Rs Activity Between Greenhouse Cultivation Andmentioning

confidence: 99%

Monthly and Yearly Variations in Oxygen Radical-scavenging Activity, Ascorbic Acid Content, and Degrees Brix of Komatsuna (<i>Brassica rapa</i> var. <i>perviridis</i>) in the Kanto Region, Japan

Takei

Goh²,

Hattori³

et al. 2020

Hortic J

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It is commonly recognized that vegetables in their best season are delicious and have high nutritional value. We investigated the monthly and yearly variations in radical-scavenging (RS) activity, an indicator of antioxidant activity, ascorbic acid, and degrees Brix of Brassica rapa var. perviridis (komatsuna) cultivated in the Kanto region, Japan. RS activity was significantly higher in December, January, and February than in the other months in all tested years (2010-2015). For two varieties (summer and winter varieties) their RS activity was significantly higher in winter than in summer. The weight proportion of leaf blades and petioles at harvest was similar (leaf blade:petiole = 4:6) both in the summer and winter, indicating that the difference in the RS activity of komatsuna between the two seasons was not due to the weight ratio, but to the increase in the RS activity of leaf blades in the winter. There were no significant differences in the RS activity of komatsuna between summer (30 days) and winter (80 days) cultivation periods, greenhouse and open-field cultivations, and producers. Multiple years of field studies revealed that the antioxidant activity, ascorbic acid content, and degrees Brix of komatsuna in the Kanto region were higher in winter than in other seasons, and suggested that komatsuna with a similar quality level may be produced when grown in regions with similar weather conditions.

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Response of two cultivars of Phaseolus vulgaris L. (French beans) plants exposed to enhanced UV-B radiation under mountain ecosystem

Cited by 11 publications

References 42 publications

How does UV-B radiation affect the initial growth of common bean (Phaseolus vulgaris L.)? Physiological and structural aspects

How does UV-B radiation affect the initial growth of common bean (Phaseolus vulgaris L.)? Physiological and structural aspects

Physiological effects of short acute UVB treatments in Chenopodium quinoa Willd

Monthly and Yearly Variations in Oxygen Radical-scavenging Activity, Ascorbic Acid Content, and Degrees Brix of Komatsuna (<i>Brassica rapa</i> var. <i>perviridis</i>) in the Kanto Region, Japan

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