Correlation of elongation factor 1A accumulation with photosynthetic pigment content and yield in winter wheat varieties under heat stress conditions

Marković, Stefan; Živančev, Dragan; Horvat, Daniela; Torbica, Aleksandra; Jovankić, Jovana; Djukic, Nevena

doi:10.1016/j.plaphy.2021.06.035

Cited by 7 publications

(1 citation statement)

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“…The major photosynthetic pigments in gametophyte blades are as follows: chlorophyll (Chl), carotenoids, phycoerythrin (PE), phycocyanin (PC), and allophycocyanin (APC) [19,20]. Chl and carotenoids, as auxiliary pigments of photosynthesis, can effectively expand the range of light absorbed by plants and are necessary for energy production; they can also be used as a secondary antioxidant to prevent oxidation in response to oxidative stress by combining free oxygen or free radicals [21]. The quality of algae products is evaluated on the apparent blackness, which mainly arises from the photosynthetic pigments.…”

Section: Introductionmentioning

confidence: 99%

A Preliminary Study on the Mechanisms of Growth and Physiological Changes in Response to Different Temperatures in Neopyropia yezoensis (Rhodophyta)

Yin

Che³

et al. 2022

Water

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As an economically valuable red seaweed, Neopyropia yezoensis (Rhodophyta) is cultivated in intertidal areas, and its growth and development are greatly influenced by environmental factors such as temperature. Although much effort has been devoted to delineating the influence, the underlying cellular and molecular mechanisms remain elusive. In this study, the gametophyte blades and protoplasts were cultured at different temperatures (13 °C, 17 °C, 21 °C, 25 °C). Only blades cultured at 13 °C maintained a normal growth state (the relative growth rate of thalli was positive, and the content of phycobiliprotein and pigments changed little); the survival and division rates of protoplasts were high at 13 °C, but greatly decreased with the increase in temperature, suggesting that 13 °C is suitable for the growth of N. yezoensis. In our efforts to delineate the underlying mechanism, a partial coding sequence (CDS) of Cyclin B and the complete CDS of cyclin-dependent-kinase B (CDKB) in N. yezoensis were cloned. Since Cyclin B controls G2/M phase transition by activating CDK and regulates the progression of cell division, we then analyzed how Cyclin B expression in the gametophyte blades might change with temperatures by qPCR and Western blotting. The results showed that the expression of Cyclin B first increased and then decreased after transfer from 13 °C to higher temperatures, and the downregulation of Cyclin B was more obvious with the increase in temperature. The phosphorylation of extracellular signal-regulated kinase (ERK) decreased with the increase in temperature, suggesting inactivation of ERK at higher temperatures; inhibition of ERK by FR180204 significantly decreased the survival and division rates of protoplasts cultured at 13 °C. These results suggest that downregulation of Cyclin B and inactivation of ERK might be involved in negatively regulating the survival and division of protoplasts and the growth of gametophyte blades of N. yezoensis at high temperatures.

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Section: Introductionmentioning

confidence: 99%