Variation in morpho-physiological, biochemical and molecular responses of two Eucalyptus species under short-term water stress

The genus occurs in a wide range of environmental conditions, including rainforests, subal-pine, arid/semi-arid and moist temperate zones. It includes species with the capacity to cope with extremely low water potential. This study aims to screen water stress tolerance in two species under nursery c...

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Bibliographic Details
Published inActa Botanica Croatica Vol. 78; no. 2; pp. 125 - 134
Main Authors Amrutha, Sivanantham, Parveen, Abdul Bari Muneera, Muthupandi, Muthusamy, Sivakumar, Veerasamy, Nautiyal, Raman, Ghosh Dasgupta, Modhumita
Format Journal Article Paper
LanguageEnglish
Published Zagreb Sciendo 01.10.2019
University of Zagreb, Department
Biološki odsjek PMF, Sveučilište u Zagrebu
Subjects
Abscisic acid
Acetic acid
Aridity
Biochemistry
drought stress
Environmental conditions
Eucalyptus
Genotypes
Indoleacetic acid
Leaf area
leaf temperature
Leaves
Moisture content
Osmotin
Parameters
Phenols
Photosynthesis
Physiology
Plant growth
Proline
Rainforests
Semiarid environments
Species
Sugar
sugars
Temperate zones
transcription factors
Variation
Water content
Water potential
Water stress
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Summary:The genus occurs in a wide range of environmental conditions, including rainforests, subal-pine, arid/semi-arid and moist temperate zones. It includes species with the capacity to cope with extremely low water potential. This study aims to screen water stress tolerance in two species under nursery conditions. Inter-specific variation in morphological, physiological, biochemical and molecular parameters in two species ( . and . ) with contrasting levels of tolerance to progressive short term water-deprived condition was evaluated. Water stress reduced growth measured in terms of root:shoot ratio and specific leaf area (SLA), photosynthetic parameters, leaf water potential and relative water content (RWC) in both genotypes. Biochemical parameters including total sugars, phenol, phytohormones (indole acetic acid and abscisic acid) and proline were found to significantly increase during stress in both genotypes. Water responsive transcripts like osmotin and DREB/CBF registered significant expression variation in the two genotypes, suggesting their key role in regulating water stress tolerance in
Bibliography:225645
ISSN:1847-8476
0365-0588
1847-8476
DOI:10.2478/botcro-2019-0021