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The effects of previous summer drought and fertilization on winter non-structural carbon reserves and spring leaf development of downy oak saplings

It is still unknown whether the previous summer season drought and fertilization will affect the winter non-structural carbohydrate (NSC) reserves, spring leaf development, and mortality of trees in the next year. We, therefore, conducted an experiment with Quercus pubescens (downy oaks) saplings gr...

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Autores principales: Wang, Xiaoyu, Schönbeck, Leonie, Gessler, Arthur, Yang, Yue, Rigling, Andreas, Yu, Dapao, He, Peng, Li, Maihe
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9669721/
https://www.ncbi.nlm.nih.gov/pubmed/36407605
http://dx.doi.org/10.3389/fpls.2022.1035191
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author Wang, Xiaoyu
Schönbeck, Leonie
Gessler, Arthur
Yang, Yue
Rigling, Andreas
Yu, Dapao
He, Peng
Li, Maihe
author_facet Wang, Xiaoyu
Schönbeck, Leonie
Gessler, Arthur
Yang, Yue
Rigling, Andreas
Yu, Dapao
He, Peng
Li, Maihe
author_sort Wang, Xiaoyu
collection PubMed
description It is still unknown whether the previous summer season drought and fertilization will affect the winter non-structural carbohydrate (NSC) reserves, spring leaf development, and mortality of trees in the next year. We, therefore, conducted an experiment with Quercus pubescens (downy oaks) saplings grown under four drought levels from field capacity (well-watered; ~25% volumetric water content) to wilting point (extreme drought; ~6%), in combination with two fertilizer treatments (0 vs. 50 kg/ha/year blended) for one growing season to answer this question. We measured the pre- and post-winter NSC, and calculated the over-winter NSC consumption in storage tissues (i.e. shoots and roots) following drought and fertilization treatment, and recorded the spring leaf phenology, leaf biomass, and mortality next year. The results showed that, irrespective of drought intensity, carbon reserves were abundant in storage tissues, especially in roots. Extreme drought did not significantly alter NSC levels in tissues, but delayed the spring leaf expansion and reduced the leaf biomass. Previous season fertilization promoted shoot NSC use in extreme drought-stressed saplings over winter (showing reduced carbon reserves in shoots after winter), but it also showed positive effects on survival next year. We conclude that: (1) drought-stressed downy oak saplings seem to be able to maintain sufficient mobile carbohydrates for survival, (2) fertilization can alleviate the negative effects of extreme drought on survival and recovery growth of tree saplings.
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spelling pubmed-96697212022-11-18 The effects of previous summer drought and fertilization on winter non-structural carbon reserves and spring leaf development of downy oak saplings Wang, Xiaoyu Schönbeck, Leonie Gessler, Arthur Yang, Yue Rigling, Andreas Yu, Dapao He, Peng Li, Maihe Front Plant Sci Plant Science It is still unknown whether the previous summer season drought and fertilization will affect the winter non-structural carbohydrate (NSC) reserves, spring leaf development, and mortality of trees in the next year. We, therefore, conducted an experiment with Quercus pubescens (downy oaks) saplings grown under four drought levels from field capacity (well-watered; ~25% volumetric water content) to wilting point (extreme drought; ~6%), in combination with two fertilizer treatments (0 vs. 50 kg/ha/year blended) for one growing season to answer this question. We measured the pre- and post-winter NSC, and calculated the over-winter NSC consumption in storage tissues (i.e. shoots and roots) following drought and fertilization treatment, and recorded the spring leaf phenology, leaf biomass, and mortality next year. The results showed that, irrespective of drought intensity, carbon reserves were abundant in storage tissues, especially in roots. Extreme drought did not significantly alter NSC levels in tissues, but delayed the spring leaf expansion and reduced the leaf biomass. Previous season fertilization promoted shoot NSC use in extreme drought-stressed saplings over winter (showing reduced carbon reserves in shoots after winter), but it also showed positive effects on survival next year. We conclude that: (1) drought-stressed downy oak saplings seem to be able to maintain sufficient mobile carbohydrates for survival, (2) fertilization can alleviate the negative effects of extreme drought on survival and recovery growth of tree saplings. Frontiers Media S.A. 2022-11-03 /pmc/articles/PMC9669721/ /pubmed/36407605 http://dx.doi.org/10.3389/fpls.2022.1035191 Text en Copyright © 2022 Wang, Schönbeck, Gessler, Yang, Rigling, Yu, He and Li https://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) and the copyright owner(s) 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
Wang, Xiaoyu
Schönbeck, Leonie
Gessler, Arthur
Yang, Yue
Rigling, Andreas
Yu, Dapao
He, Peng
Li, Maihe
The effects of previous summer drought and fertilization on winter non-structural carbon reserves and spring leaf development of downy oak saplings
title The effects of previous summer drought and fertilization on winter non-structural carbon reserves and spring leaf development of downy oak saplings
title_full The effects of previous summer drought and fertilization on winter non-structural carbon reserves and spring leaf development of downy oak saplings
title_fullStr The effects of previous summer drought and fertilization on winter non-structural carbon reserves and spring leaf development of downy oak saplings
title_full_unstemmed The effects of previous summer drought and fertilization on winter non-structural carbon reserves and spring leaf development of downy oak saplings
title_short The effects of previous summer drought and fertilization on winter non-structural carbon reserves and spring leaf development of downy oak saplings
title_sort effects of previous summer drought and fertilization on winter non-structural carbon reserves and spring leaf development of downy oak saplings
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9669721/
https://www.ncbi.nlm.nih.gov/pubmed/36407605
http://dx.doi.org/10.3389/fpls.2022.1035191
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