Banca de QUALIFICAÇÃO: ALAENE TEIXEIRA RIBEIRO

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : ALAENE TEIXEIRA RIBEIRO
DATE: 27/01/2022
TIME: 09:00
LOCAL: Google Meet
TITLE:

ECOPHYSIOLOGICAL RESPONSES OF YOUNG ANDIROBA PLANTS UNDER WATER LIMITATION AND ACTION OF BRASSINOSTEROIDS AS A POSSIBLE ATTENUATING FACTOR

KEY WORDS:

Drought. Plant hydraulics. Climate changes. Phytohormones.

PAGES: 33
BIG AREA: Ciências Biológicas
AREA: Botânica
SUMMARY:

Climate change is increasing the frequency of extreme events, such as droughts, causing water stress with consequent limitation of growth and productivity in several ecosystems. Among the most threatened ecosystems, tropical forests, such as the Amazon, stand out. An important tool in understanding plant responses to water stress is the use of functional attributes, being used to describe the variation in morphophysiological characters of different plant species. In view of the toxic effects and symptoms generated by water stress in plants, the exogenous application of the endogenous concentration of phytohormones such as Brassinosteroids (BRs) is an important regulatory mechanism. There are still many gaps in knowledge about how plants function in drought conditions and substances that can mitigate the effects of drought on metabolism. The objective of this research will be to evaluate the ecophysiological responses of Carapa guianensis seedlings under water stress conditions. The experiment will be carried out at Universidade Federal Rural da Amazônia, Paragominas campus, under a completely randomized design with two water conditions (control and water deficit) and two levels of 24-epibrassinolide application (0 and 100 nM. EBR, called respectively, - EBR and +EBR). 40 experimental units will be used (ten replications for each of the four treatments, with one plant in each unit. The measurements to be made in each treatment will be: Vulnerability curves to cavitation, water potential, gas exchange, pressure-volume curves, chlorophyll fluorescence and biomass analysis. The results of this project are expected to fill gaps on responses of tropical plants under water stress and advance the knowledge and use of phytohormones as a mitigator of drought-related effects.

BANKING MEMBERS:
Externo à Instituição - LUCIANO PEREIRA
Externo à Instituição - BRENO RICARDO SERRÃO DA SILVA - ITV
Externa à Instituição - FERNANDA VASCONCELOS BARROS
Presidente - 079.651.076-86 - GRAZIELLE SALES TEODORO - UFPA