Cargando…

Nitrogen Nutrition Improves the Potential of Wheat (Triticum aestivum L.) to Alleviate the Effects of Drought Stress during Vegetative Growth Periods

Efficient nitrogen (N) nutrition has the potential to alleviate drought stress in crops by maintaining metabolic activities even at low tissue water potential. This study was aimed to understand the potential of N to minimize the effects of drought stress applied/occur during tillering (Feekes stage...

Descripción completa

Detalles Bibliográficos
Autores principales: Abid, Muhammad, Tian, Zhongwei, Ata-Ul-Karim, Syed Tahir, Cui, Yakun, Liu, Yang, Zahoor, Rizwan, Jiang, Dong, Dai, Tingbo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4927619/
https://www.ncbi.nlm.nih.gov/pubmed/27446197
http://dx.doi.org/10.3389/fpls.2016.00981
_version_ 1782440288794443776
author Abid, Muhammad
Tian, Zhongwei
Ata-Ul-Karim, Syed Tahir
Cui, Yakun
Liu, Yang
Zahoor, Rizwan
Jiang, Dong
Dai, Tingbo
author_facet Abid, Muhammad
Tian, Zhongwei
Ata-Ul-Karim, Syed Tahir
Cui, Yakun
Liu, Yang
Zahoor, Rizwan
Jiang, Dong
Dai, Tingbo
author_sort Abid, Muhammad
collection PubMed
description Efficient nitrogen (N) nutrition has the potential to alleviate drought stress in crops by maintaining metabolic activities even at low tissue water potential. This study was aimed to understand the potential of N to minimize the effects of drought stress applied/occur during tillering (Feekes stage 2) and jointing (Feekes stage 6) growth stages of wheat by observing the regulations and limitations of physiological activities, crop growth rate during drought periods as well as final grain yields at maturity. In present study, pot cultured plants of a wheat cultivar Yangmai-16 were exposed to three water levels [severe stress at 35–40% field capacity (FC), moderate stress at 55–60% FC and well-watered at 75–80% FC] under two N rates (0.24 g and 0.16 g/kg soil). The results showed that the plants under severe drought stress accompanied by low N exhibited highly downregulated photosynthesis, and chlorophyll (Chl) fluorescence during the drought stress periods, and showed an accelerated grain filling rate with shortened grain filling duration (GFD) at post-anthesis, and reduced grain yields. Severe drought-stressed plants especially at jointing, exhibited lower Chl and Rubisco contents, lower efficiency of photosystem II and greater grain yield reductions. In contrast, drought-stressed plants under higher N showed tolerance to drought stress by maintaining higher leaf water potential, Chl and Rubisco content; lower lipid peroxidation associated with higher superoxide dismutase and ascorbate peroxidase activities during drought periods. The plants under higher N showed delayed senescence, increased GFD and lower grain yield reductions. The results of the study suggested that higher N nutrition contributed to drought tolerance in wheat by maintaining higher photosynthetic activities and antioxidative defense system during vegetative growth periods.
format Online
Article
Text
id pubmed-4927619
institution National Center for Biotechnology Information
language English
publishDate 2016
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-49276192016-07-21 Nitrogen Nutrition Improves the Potential of Wheat (Triticum aestivum L.) to Alleviate the Effects of Drought Stress during Vegetative Growth Periods Abid, Muhammad Tian, Zhongwei Ata-Ul-Karim, Syed Tahir Cui, Yakun Liu, Yang Zahoor, Rizwan Jiang, Dong Dai, Tingbo Front Plant Sci Plant Science Efficient nitrogen (N) nutrition has the potential to alleviate drought stress in crops by maintaining metabolic activities even at low tissue water potential. This study was aimed to understand the potential of N to minimize the effects of drought stress applied/occur during tillering (Feekes stage 2) and jointing (Feekes stage 6) growth stages of wheat by observing the regulations and limitations of physiological activities, crop growth rate during drought periods as well as final grain yields at maturity. In present study, pot cultured plants of a wheat cultivar Yangmai-16 were exposed to three water levels [severe stress at 35–40% field capacity (FC), moderate stress at 55–60% FC and well-watered at 75–80% FC] under two N rates (0.24 g and 0.16 g/kg soil). The results showed that the plants under severe drought stress accompanied by low N exhibited highly downregulated photosynthesis, and chlorophyll (Chl) fluorescence during the drought stress periods, and showed an accelerated grain filling rate with shortened grain filling duration (GFD) at post-anthesis, and reduced grain yields. Severe drought-stressed plants especially at jointing, exhibited lower Chl and Rubisco contents, lower efficiency of photosystem II and greater grain yield reductions. In contrast, drought-stressed plants under higher N showed tolerance to drought stress by maintaining higher leaf water potential, Chl and Rubisco content; lower lipid peroxidation associated with higher superoxide dismutase and ascorbate peroxidase activities during drought periods. The plants under higher N showed delayed senescence, increased GFD and lower grain yield reductions. The results of the study suggested that higher N nutrition contributed to drought tolerance in wheat by maintaining higher photosynthetic activities and antioxidative defense system during vegetative growth periods. Frontiers Media S.A. 2016-06-30 /pmc/articles/PMC4927619/ /pubmed/27446197 http://dx.doi.org/10.3389/fpls.2016.00981 Text en Copyright © 2016 Abid, Tian, Ata-Ul-Karim, Cui, Liu, Zahoor, Jiang and Dai. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Abid, Muhammad
Tian, Zhongwei
Ata-Ul-Karim, Syed Tahir
Cui, Yakun
Liu, Yang
Zahoor, Rizwan
Jiang, Dong
Dai, Tingbo
Nitrogen Nutrition Improves the Potential of Wheat (Triticum aestivum L.) to Alleviate the Effects of Drought Stress during Vegetative Growth Periods
title Nitrogen Nutrition Improves the Potential of Wheat (Triticum aestivum L.) to Alleviate the Effects of Drought Stress during Vegetative Growth Periods
title_full Nitrogen Nutrition Improves the Potential of Wheat (Triticum aestivum L.) to Alleviate the Effects of Drought Stress during Vegetative Growth Periods
title_fullStr Nitrogen Nutrition Improves the Potential of Wheat (Triticum aestivum L.) to Alleviate the Effects of Drought Stress during Vegetative Growth Periods
title_full_unstemmed Nitrogen Nutrition Improves the Potential of Wheat (Triticum aestivum L.) to Alleviate the Effects of Drought Stress during Vegetative Growth Periods
title_short Nitrogen Nutrition Improves the Potential of Wheat (Triticum aestivum L.) to Alleviate the Effects of Drought Stress during Vegetative Growth Periods
title_sort nitrogen nutrition improves the potential of wheat (triticum aestivum l.) to alleviate the effects of drought stress during vegetative growth periods
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4927619/
https://www.ncbi.nlm.nih.gov/pubmed/27446197
http://dx.doi.org/10.3389/fpls.2016.00981
work_keys_str_mv AT abidmuhammad nitrogennutritionimprovesthepotentialofwheattriticumaestivumltoalleviatetheeffectsofdroughtstressduringvegetativegrowthperiods
AT tianzhongwei nitrogennutritionimprovesthepotentialofwheattriticumaestivumltoalleviatetheeffectsofdroughtstressduringvegetativegrowthperiods
AT ataulkarimsyedtahir nitrogennutritionimprovesthepotentialofwheattriticumaestivumltoalleviatetheeffectsofdroughtstressduringvegetativegrowthperiods
AT cuiyakun nitrogennutritionimprovesthepotentialofwheattriticumaestivumltoalleviatetheeffectsofdroughtstressduringvegetativegrowthperiods
AT liuyang nitrogennutritionimprovesthepotentialofwheattriticumaestivumltoalleviatetheeffectsofdroughtstressduringvegetativegrowthperiods
AT zahoorrizwan nitrogennutritionimprovesthepotentialofwheattriticumaestivumltoalleviatetheeffectsofdroughtstressduringvegetativegrowthperiods
AT jiangdong nitrogennutritionimprovesthepotentialofwheattriticumaestivumltoalleviatetheeffectsofdroughtstressduringvegetativegrowthperiods
AT daitingbo nitrogennutritionimprovesthepotentialofwheattriticumaestivumltoalleviatetheeffectsofdroughtstressduringvegetativegrowthperiods