Tesi etd-09162018-114502
Link copiato negli appunti
Tipo di tesi
Perfezionamento
Autore
TRAVERSARI, SILVIA
Indirizzo email
sil.traversari@gmail.com
URN
etd-09162018-114502
Titolo
Response mechanisms of secondary meristem to abiotic stresses: drought effect on water and carbon relations in poplar
Settore scientifico disciplinare
AGR/03
Corso di studi
SCIENZE AGRARIE E BIOTECNOLOGIE - Agrobiosciences
Commissione
relatore Prof. SEBASTIANI, LUCA
Parole chiave
- cambial region
- carbohydrates
- osmotic balance
- poplar
- water relation
- xylem
Data inizio appello
23/11/2018;
Disponibilità
completa
Riassunto analitico
This PhD project is focused on the carbon and water relations during drought and the aim is to
advance the current understanding on the mechanisms underlying the water deficit response.
The goal is to comprehend:
i) the genotype-dependent features involved in the different response to drought of poplar
species in the stem, particularly in cambial region;
ii) the sink-source variations in the carbon and water balances in the different plant
compartments under water deficit;
iii) the role of carbohydrates in the osmotic processes and their preferential use under stress
conditions.
According with these aims, three experiments have been carried out:
a) Study of the genotype-dependent features involved in the different response to drought of poplar
species. In this work two different poplar species were used, Populus alba (L.) and Populus
deltoides (Marsh.), to evaluate the response to water deficit and rehydration in water and
carbohydrate relationships in cambial region.
b) Study of the role of carbohydrates, as osmotically active molecules, in water deficit response in P.
alba, focusing on the daily carbon and water balances within different tissues.
c) Study of the carbohydrate and water balances in poplar callus-medium system under osmotic stress and how these relationships can influence the osmoregulation and the growth.
advance the current understanding on the mechanisms underlying the water deficit response.
The goal is to comprehend:
i) the genotype-dependent features involved in the different response to drought of poplar
species in the stem, particularly in cambial region;
ii) the sink-source variations in the carbon and water balances in the different plant
compartments under water deficit;
iii) the role of carbohydrates in the osmotic processes and their preferential use under stress
conditions.
According with these aims, three experiments have been carried out:
a) Study of the genotype-dependent features involved in the different response to drought of poplar
species. In this work two different poplar species were used, Populus alba (L.) and Populus
deltoides (Marsh.), to evaluate the response to water deficit and rehydration in water and
carbohydrate relationships in cambial region.
b) Study of the role of carbohydrates, as osmotically active molecules, in water deficit response in P.
alba, focusing on the daily carbon and water balances within different tissues.
c) Study of the carbohydrate and water balances in poplar callus-medium system under osmotic stress and how these relationships can influence the osmoregulation and the growth.
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