English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Growth and metabolic adjustments in response to gibberellin deficiency in drought stressed tomato plants

Omena-Garcia, R. P., Martins, A. O., Medeiros, D., Vallarino, J. G., Ribeiro, D. M., Fernie, A. R., et al. (2019). Growth and metabolic adjustments in response to gibberellin deficiency in drought stressed tomato plants. Environmental and Experimental Botany, 159, 95-107. doi:10.1016/j.envexpbot.2018.12.011.

Item is

Files

show Files

Locators

show
hide
Locator:
Link (Any fulltext)
Description:
-
OA-Status:

Creators

show
hide
 Creators:
Omena-Garcia, Rebeca Patrícia1, Author
Martins, Auxiliadora Oliveira1, Author
Medeiros, D.B.2, Author           
Vallarino, J. G.2, Author           
Ribeiro, Dimas Mendes1, Author
Fernie, A. R.2, Author           
Araújo, Wagner L.1, Author
Nunes-Nesi, Adriano1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Central Metabolism, Department Willmitzer, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753339              

Content

show
hide
Free keywords: Water deficit, Gibberellin biosynthesis, Metabolomics, Amino acids accumulation, Shoot and root growth, Stress adaptation
 Abstract: Gibberellins (GAs) have been shown to be involved in the tolerance of plants to a range of environmental stresses. However, the physiological and metabolic implications of altered levels of GAs in plants under drought stress remain largely unknown. To understand the contribution of GAs for the responses to water deficit conditions, physiological and metabolic parameters were evaluated in tomato deficient mutants in GAs biosynthesis, gib1, gib2, and gib3. Interestingly, the mutants maintained leaf water content over a longer time period and recovered photosynthesis faster than wild-type (WT) plants. Furthermore, gib1 and gib2 plants showed no apparent wilt even after reaching low leaf water potential (-1.3 MPa). Additionally, mutants plants partitioned more biomass to the roots than shoots compared to WT. The maintenance of leaf water content and consequent increased water use efficiency observed in the mutants can be explained by the osmotic adjustment of leaf and root cells, mainly due to amino acid accumulation. Collectively, our results suggest that plants with reduced GAs content are able to cope with water deprivation by increasing proline and other amino acid levels. This response, alongside partitioning of carbon to roots allows GAs-deficient plants to maintain the leaf turgor for a longer time and thereby promotes water deficit tolerance.

Details

show
hide
Language(s): eng - English
 Dates: 2019
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1016/j.envexpbot.2018.12.011
BibTex Citekey: OMENAGARCIA201995
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Environmental and Experimental Botany
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Oxford : Elsevier
Pages: - Volume / Issue: 159 Sequence Number: - Start / End Page: 95 - 107 Identifier: ISSN: 0098-8472
CoNE: https://pure.mpg.de/cone/journals/resource/954928507606