Triploidy in Citrus Genotypes Improves Leaf Gas Exchange and Antioxidant Recovery From Water Deficit
The triploidy has proved to be a powerful approach breeding programs, especially in Citrus since seedlessness is one of the main consumer expectations. Citrus plants face numerous abiotic stresses including water deficit, which negatively impact growth and crop yield. In this study, we evaluated the...
Main Authors: | , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Frontiers Media S.A.
2021-02-01
|
Series: | Frontiers in Plant Science |
Subjects: | |
Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2020.615335/full |
id |
doaj-5790bb7e9d9c4f97bf9be3a799157f41 |
---|---|
record_format |
Article |
spelling |
doaj-5790bb7e9d9c4f97bf9be3a799157f412021-02-19T06:34:43ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2021-02-011110.3389/fpls.2020.615335615335Triploidy in Citrus Genotypes Improves Leaf Gas Exchange and Antioxidant Recovery From Water DeficitRadia Lourkisti0Yann Froelicher1Stéphane Herbette2Raphael Morillon3Jean Giannettini4Liliane Berti5Jérémie Santini6CNRS, Equipe de Biochimie et Biologie Moléculaire du Végétal, UMR 6134 SPE, Université de Corse, Corsica, FranceCIRAD UMR AGAP, Station INRAE, Corsica, FranceUCA, INRAE, PIAF, Clermont-Ferrand, FranceEquipe SEAPAG, CIRAD, UMR AGAP, F-97170 Petit-Bourg, Guadeloupe, France – AGAP, Univ Montpellier, CIRAD, INRAE, Institut Agro, Montpellier, FranceCNRS, Equipe de Biochimie et Biologie Moléculaire du Végétal, UMR 6134 SPE, Université de Corse, Corsica, FranceCNRS, Equipe de Biochimie et Biologie Moléculaire du Végétal, UMR 6134 SPE, Université de Corse, Corsica, FranceCNRS, Equipe de Biochimie et Biologie Moléculaire du Végétal, UMR 6134 SPE, Université de Corse, Corsica, FranceThe triploidy has proved to be a powerful approach breeding programs, especially in Citrus since seedlessness is one of the main consumer expectations. Citrus plants face numerous abiotic stresses including water deficit, which negatively impact growth and crop yield. In this study, we evaluated the physiological and biochemical responses to water deficit and recovery capacity of new triploid hybrids, in comparison with diploid hybrids, their parents (“Fortune” mandarin and “Ellendale” tangor) and one clementine tree used as reference. The water deficit significantly decreased the relative water content (RWC) and leaf gas exchange (Pnet and gs) and it increased the levels of oxidative markers (H2O2 and MDA) and antioxidants. Compared to diploid varieties, triploid hybrids limited water loss by osmotic adjustment as reflected by higher RWC, intrinsic water use efficiency (iWUE Pnet/gs) iWUE and leaf proline levels. These had been associated with an effective thermal dissipation of excess energy (NPQ) and lower oxidative damage. Our results showed that triploidy in citrus enhances the recovery capacity after a water deficit in comparison with diploids due to better carboxylation efficiency, restored water-related parameters and efficient antioxidant system.https://www.frontiersin.org/articles/10.3389/fpls.2020.615335/fullosmotic adjustmentoxidative statusphotosynthesispolyploidywater deficit |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Radia Lourkisti Yann Froelicher Stéphane Herbette Raphael Morillon Jean Giannettini Liliane Berti Jérémie Santini |
spellingShingle |
Radia Lourkisti Yann Froelicher Stéphane Herbette Raphael Morillon Jean Giannettini Liliane Berti Jérémie Santini Triploidy in Citrus Genotypes Improves Leaf Gas Exchange and Antioxidant Recovery From Water Deficit Frontiers in Plant Science osmotic adjustment oxidative status photosynthesis polyploidy water deficit |
author_facet |
Radia Lourkisti Yann Froelicher Stéphane Herbette Raphael Morillon Jean Giannettini Liliane Berti Jérémie Santini |
author_sort |
Radia Lourkisti |
title |
Triploidy in Citrus Genotypes Improves Leaf Gas Exchange and Antioxidant Recovery From Water Deficit |
title_short |
Triploidy in Citrus Genotypes Improves Leaf Gas Exchange and Antioxidant Recovery From Water Deficit |
title_full |
Triploidy in Citrus Genotypes Improves Leaf Gas Exchange and Antioxidant Recovery From Water Deficit |
title_fullStr |
Triploidy in Citrus Genotypes Improves Leaf Gas Exchange and Antioxidant Recovery From Water Deficit |
title_full_unstemmed |
Triploidy in Citrus Genotypes Improves Leaf Gas Exchange and Antioxidant Recovery From Water Deficit |
title_sort |
triploidy in citrus genotypes improves leaf gas exchange and antioxidant recovery from water deficit |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Plant Science |
issn |
1664-462X |
publishDate |
2021-02-01 |
description |
The triploidy has proved to be a powerful approach breeding programs, especially in Citrus since seedlessness is one of the main consumer expectations. Citrus plants face numerous abiotic stresses including water deficit, which negatively impact growth and crop yield. In this study, we evaluated the physiological and biochemical responses to water deficit and recovery capacity of new triploid hybrids, in comparison with diploid hybrids, their parents (“Fortune” mandarin and “Ellendale” tangor) and one clementine tree used as reference. The water deficit significantly decreased the relative water content (RWC) and leaf gas exchange (Pnet and gs) and it increased the levels of oxidative markers (H2O2 and MDA) and antioxidants. Compared to diploid varieties, triploid hybrids limited water loss by osmotic adjustment as reflected by higher RWC, intrinsic water use efficiency (iWUE Pnet/gs) iWUE and leaf proline levels. These had been associated with an effective thermal dissipation of excess energy (NPQ) and lower oxidative damage. Our results showed that triploidy in citrus enhances the recovery capacity after a water deficit in comparison with diploids due to better carboxylation efficiency, restored water-related parameters and efficient antioxidant system. |
topic |
osmotic adjustment oxidative status photosynthesis polyploidy water deficit |
url |
https://www.frontiersin.org/articles/10.3389/fpls.2020.615335/full |
work_keys_str_mv |
AT radialourkisti triploidyincitrusgenotypesimprovesleafgasexchangeandantioxidantrecoveryfromwaterdeficit AT yannfroelicher triploidyincitrusgenotypesimprovesleafgasexchangeandantioxidantrecoveryfromwaterdeficit AT stephaneherbette triploidyincitrusgenotypesimprovesleafgasexchangeandantioxidantrecoveryfromwaterdeficit AT raphaelmorillon triploidyincitrusgenotypesimprovesleafgasexchangeandantioxidantrecoveryfromwaterdeficit AT jeangiannettini triploidyincitrusgenotypesimprovesleafgasexchangeandantioxidantrecoveryfromwaterdeficit AT lilianeberti triploidyincitrusgenotypesimprovesleafgasexchangeandantioxidantrecoveryfromwaterdeficit AT jeremiesantini triploidyincitrusgenotypesimprovesleafgasexchangeandantioxidantrecoveryfromwaterdeficit |
_version_ |
1724261618995429376 |