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Response to phosphorus availability in eucalyptus species seedlings: growth and photosynthetic characteristics of the leaves

Grant number: 17/21738-9
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): December 01, 2017
Effective date (End): November 30, 2018
Field of knowledge:Agronomical Sciences - Agronomy
Principal Investigator:Sara Adrian Lopez de Andrade
Grantee:Samir Bichara
Home Institution: Instituto de Biologia (IB). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
Associated research grant:16/25498-0 - Phosphorus use efficiency in Eucalyptus and the physiological and genetic mechanisms involved, AP.TEM

Abstract

Phosphorus (P) is essential to plants because it is part of vital molecules and acts in various metabolic and physiological processes. Therefore, plant function and production are dependent on the availability of this element. Phosphorus deficiency is a common abiotic stress that occurs in several regions of the world and may limit plant growth. Eucalyptus is an important forest crop with a significant economic impact in Brazil, whose plantations often have a demand for P, given the high P retention capacity of many soil of the country, which are very weathered and leached. The present project aims to evaluate the response of different species of eucalyptus to the availability of P in the soil, through the evaluation of non-destructive parameters during the growth period of eucalyptus. It is proposed the exploration of the phenotypic diversity of 24 eucalyptus species of the group, evaluating the growth response in terms of height, number of leaves, stem diameter and also in relation to the photosynthetic characteristics of the leaves, such as photochemical efficiency and the contents of chlorophyll, anthocyanins and flavonoids. These evaluations will be of great importance for the definition of species in terms of their efficiency in the use of P and their responsiveness to the supply of this element, within the thematic project in which this proposal is inserted. This tematic project aims to evaluate the response of species to the response to P sufficiency, but which differ in their ability to acquire P when under conditions of deficiency, and to study the physiological and molecular mechanisms involved. (AU)

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
BULGARELLI, RAFAELA GAGETI; DE OLIVEIRA SILVA, FRANKLIN MAGNUM; BICHARA, SAMIR; ANDRADE, SARA ADRIAN L.; MAZZAFERA, PAULO. Eucalypts and low phosphorus availability: between responsiveness and efficiency. PLANT AND SOIL, v. 445, n. 1-2, SI OCT 2019. Web of Science Citations: 0.

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