Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Effect of Enhanced UV-B Radiation on Fruit Maturity and Quality, and Leaf Photosynthesis in ' Guifei ' Mango

Version 1 : Received: 10 November 2021 / Approved: 11 November 2021 / Online: 11 November 2021 (13:01:28 CET)

How to cite: Lin, X.; Liao, H.; Du, J.; Peng, J.; Zhou, K. Effect of Enhanced UV-B Radiation on Fruit Maturity and Quality, and Leaf Photosynthesis in ' Guifei ' Mango. Preprints 2021, 2021110211 (doi: 10.20944/preprints202111.0211.v1). Lin, X.; Liao, H.; Du, J.; Peng, J.; Zhou, K. Effect of Enhanced UV-B Radiation on Fruit Maturity and Quality, and Leaf Photosynthesis in ' Guifei ' Mango. Preprints 2021, 2021110211 (doi: 10.20944/preprints202111.0211.v1).

Abstract

(1) Background: Investigating the characteristics of photosynthetic physiological changes of leaves in Mangifera indica L. cv. 'GuIfei' under enhanced UV-B radiation, natural light exposed trees were regarded as control, and 96 kJ·m-2·d-1enhanced UV-B radiation was artificially simulated in the field; (2) Methods: The changes of fruit maturity and fruit quality, leaf net photosynthetic rate (Pn), photosynthetic pigments contents, photochemical reaction, activities of photosynthetic enzymes and their genes expressions were determined; (3) Results: Compared with CK, the percentage of mature fruits of the treatment was significantly increased, and fruit quality was better. The net photosynthetic rate (Pn), the contents of photosynthetic pigment, Hill reaction activity and photochemical quenching coefficient (qP) of the treatment leaves showed a significantly higher trend than CK. The activities of Rubisco and RCA, and the expression of Rubisco genes rbcL and rbcS were significantly increased; (4) Conclusions: 96 kJ·m-2·d-1 enhanced UV-B radiation treatment improved Rubisco activity through increasing the expression of Rubisco genes rbcL and rbcS, thereby enhancing the CO2-fixing capacity and dark reaction capacity of leaves. Based on this, it raised the net photosynthetic rate of leaves, which promoted the early maturity of 'Guifei' mango by the fast accumulating photosynthetic products.

Keywords

UV-B radiation; Mango; Fruit maturity; Fruit quality,Photosynthesis; Photosynthetic enzymes; Gene expression

Subject

BIOLOGY, Horticulture

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our diversity statement.

Leave a public comment
Send a private comment to the author(s)
Views 0
Downloads 0
Comments 0
Metrics 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.