Empowering Agricultural Knowledge and Technology

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Empowering Agricultural Knowledge and Technology

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Empowering Agricultural Knowledge and Technology

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Empowering Agricultural Knowledge and Technology

Empowering Agricultural Knowledge and Technology

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

Sivanantham Amrutha (1), Abdul Bari Muneera Parveen (1), Muthusamy Muthupandi (1), Veerasamy Sivakumar (1), Raman Nautiyal (2), Modhumita Ghosh Dasgupta (1*)
(1) Institute of Forest Genetics and Tree Breeding, R. S. Puram, Coimbatore 641002, India
(2) Indian Council of Forestry Research and Education, P. O. New Forest, Dehradun 248006, Uttarakhand, India


The genus Eucalyptus occurs in a wide range of environmental conditions, including rainforests, subalpine, 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 Eucalyptus species under nursery conditions.

Inter-specific variation in morphological, physiological, biochemical, and molecular parameters in two Eucalyptus species (E. tereticornis and E. camaldulensis) with contrasting levels of tolerance to progressive short-term water-deprived conditions 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 Eucalyptus.

Keywords: drought stress, leaf temperature, osmotin, sugars, transcription factors

Baca Jurnal (pdf)


Baca juga:

1. More than iso/anisohydry: Hydroscapes integrate plant water use and drought tolerance traits in 10 eucalypt species from contrasting climates

2. Recurrent Selection for Improved Germination under Water Stress in Russian Dandelion

3. Contrasting water use patterns of two important agroforestry tree species in the Mt Elgon region of Uganda

4. Traits and trade-offs in whole-tree hydraulic architecture along the vertical axis of Eucalyptus grandis



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