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Volume 23
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10.3390/ijms23042243
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Article

Transcription Profiles Reveal Age-Dependent Variations of Photosynthetic Properties and Sugar Metabolism in Grape Leaves (Vitis vinifera L.)

by
You-Mei Li
,
Jia-Ling You
,
Wen-Feng Nie
,
Meng-Hao Sun
and
Zhao-Sen Xie
*
College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225000, China
*
Author to whom correspondence should be addressed.
Int. J. Mol. Sci. 2022, 23(4), 2243; https://doi.org/10.3390/ijms23042243
Submission received: 12 January 2022 / Revised: 10 February 2022 / Accepted: 12 February 2022 / Published: 17 February 2022
(This article belongs to the Section Molecular Plant Sciences)
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Abstract

Leaves, considered as the ‘source’ organs, depend on the development stages because of the age-dependent photosynthesis and assimilation of leaves. However, the molecular mechanisms of age-dependent limitations on the function of leaves are seldom reported. In the present study, the photosynthesis-related characteristics and photoassimilates were investigated in grape leaves at six different age groups (Ll to L6) at micro-morphological, biochemical, and molecular levels. These results showed lower expression levels of genes associated with stomatal development, and chl biosynthesis resulted in fewer stomata and lowered chlorophyll a/b contents in L1 when compared to L3 and L5. The DEGs between L5 and L3/L1 were largely distributed at stomatal movement, carbon fixation, and sucrose and starch metabolism pathways, such as STOMATAL ANION CHANNEL PROTEIN 1 (SLAC1), FRUCTOSE-1,6-BISPHOSPHATE ALDOLASE (FBA1), SUCROSE-PHOSPHATE SYNTHASE (SPP1), and SUCROSE-PHOSPHATE PHOSPHATASE (SPS2, 4). These genes could be major candidate genes leading to increased photosynthesis capacity and sugar content in L5. The accumulation of starch grains in the chloroplast and palisade tissue of L5 and higher transcription levels of genes related to starch biosynthesis in L5 further supported the high ability of L5 to produce photoassimilates. Hence, our results provide insights for understanding different photosynthetic functions in age-dependent leaves in grape plants at the molecular level.
Keywords: grape; leaf; age; chlorophyll; photosynthesis; stomata; leaf ontogeny; sucrose grape; leaf; age; chlorophyll; photosynthesis; stomata; leaf ontogeny; sucrose

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MDPI and ACS Style

Li, Y.-M.; You, J.-L.; Nie, W.-F.; Sun, M.-H.; Xie, Z.-S. Transcription Profiles Reveal Age-Dependent Variations of Photosynthetic Properties and Sugar Metabolism in Grape Leaves (Vitis vinifera L.). Int. J. Mol. Sci. 2022, 23, 2243. https://doi.org/10.3390/ijms23042243

AMA Style

Li Y-M, You J-L, Nie W-F, Sun M-H, Xie Z-S. Transcription Profiles Reveal Age-Dependent Variations of Photosynthetic Properties and Sugar Metabolism in Grape Leaves (Vitis vinifera L.). International Journal of Molecular Sciences. 2022; 23(4):2243. https://doi.org/10.3390/ijms23042243

Chicago/Turabian Style

Li, You-Mei, Jia-Ling You, Wen-Feng Nie, Meng-Hao Sun, and Zhao-Sen Xie. 2022. "Transcription Profiles Reveal Age-Dependent Variations of Photosynthetic Properties and Sugar Metabolism in Grape Leaves (Vitis vinifera L.)" International Journal of Molecular Sciences 23, no. 4: 2243. https://doi.org/10.3390/ijms23042243

APA Style

Li, Y.-M., You, J.-L., Nie, W.-F., Sun, M.-H., & Xie, Z.-S. (2022). Transcription Profiles Reveal Age-Dependent Variations of Photosynthetic Properties and Sugar Metabolism in Grape Leaves (Vitis vinifera L.). International Journal of Molecular Sciences, 23(4), 2243. https://doi.org/10.3390/ijms23042243

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