Determinants of water circulation in a woody bamboo species: Afternoon use and night-time recharge of culm water storage
To understand water-use strategies of woody bamboo species, sap flux density (Fd) in the culms of a woody bamboo (Bambusa vulgaris Schrader ex Wendland) was monitored using the thermal dissipation method. The daytime and night-time Fd were analyzed in the dry and rainy seasons. Additionally, diurnal...
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todo:paper_0829318X_v35_n9_p964_Yang2023-10-03T15:40:07Z Determinants of water circulation in a woody bamboo species: Afternoon use and night-time recharge of culm water storage Yang, S.-J. Zhang, Y.-J. Goldstein, G. Sun, M. Ma, R.-Y. Cao, K.-F. heat dissipation method root pressure sap flow vapor pressure deficit water recharge and balance bamboo circulation modeling diurnal activity evaporation heat flux physiological response pressure field recharge sap flow seasonal variation shoot stomatal conductance vapor pressure water budget water storage Bambusa vulgaris Phyllostachys acuta plant exudate rain water Bambusa circadian rhythm darkness photon photosynthesis physiology plant exudate plant root plant stem season temperature vapor pressure wood Bambusa Circadian Rhythm Darkness Photons Photosynthesis Plant Exudates Plant Roots Plant Stems Rain Seasons Temperature Vapor Pressure Water Wood To understand water-use strategies of woody bamboo species, sap flux density (Fd) in the culms of a woody bamboo (Bambusa vulgaris Schrader ex Wendland) was monitored using the thermal dissipation method. The daytime and night-time Fd were analyzed in the dry and rainy seasons. Additionally, diurnal changes in root pressure, culm circumference, and stomatal conductance (gs) were investigated to characterize the mechanisms used to maintain diurnal water balance of woody bamboos. Both in the dry and rainy seasons, daytime Fd responded to vapor pressure deficit (VPD) in an exponential fashion, with a fast initial increase in Fd when VPD increased from 0 to 1 kPa. The Fd and gs started to increase very fast as light intensity and VPD increased in the morning, but they decreased sharply once the maximum value was achieved. The Fd response of this woody bamboo to VPD was much faster than that of representative trees and palms growing in the same study site, suggesting its fast sap flow and stomatal responses to changes in ambient environmental factors. The Fd in the lower and higher culm positions started to increase at the same time in the morning, but the Fd in the higher culm position was higher than that of the lower culm in the afternoon. Consistently, distinct decreases in its culm circumference in the afternoon were detected. Therefore, unlike trees, water storage of bamboo culms was not used for its transpiration in the morning but in the afternoon. Nocturnal sap flow of this woody bamboo was also detected and related to root pressure. We conclude that this bamboo has fast sap flow/stomatal responses to irradiance and evaporative demands, and it uses substantial water storage for transpiration in the afternoon, while root pressure appears to be a mechanism resulting in culm water storage recharge during the night. © 2015 The Author. Published by Oxford University Press. All rights reserved. Fil:Goldstein, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0829318X_v35_n9_p964_Yang |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
heat dissipation method root pressure sap flow vapor pressure deficit water recharge and balance bamboo circulation modeling diurnal activity evaporation heat flux physiological response pressure field recharge sap flow seasonal variation shoot stomatal conductance vapor pressure water budget water storage Bambusa vulgaris Phyllostachys acuta plant exudate rain water Bambusa circadian rhythm darkness photon photosynthesis physiology plant exudate plant root plant stem season temperature vapor pressure wood Bambusa Circadian Rhythm Darkness Photons Photosynthesis Plant Exudates Plant Roots Plant Stems Rain Seasons Temperature Vapor Pressure Water Wood |
| spellingShingle |
heat dissipation method root pressure sap flow vapor pressure deficit water recharge and balance bamboo circulation modeling diurnal activity evaporation heat flux physiological response pressure field recharge sap flow seasonal variation shoot stomatal conductance vapor pressure water budget water storage Bambusa vulgaris Phyllostachys acuta plant exudate rain water Bambusa circadian rhythm darkness photon photosynthesis physiology plant exudate plant root plant stem season temperature vapor pressure wood Bambusa Circadian Rhythm Darkness Photons Photosynthesis Plant Exudates Plant Roots Plant Stems Rain Seasons Temperature Vapor Pressure Water Wood Yang, S.-J. Zhang, Y.-J. Goldstein, G. Sun, M. Ma, R.-Y. Cao, K.-F. Determinants of water circulation in a woody bamboo species: Afternoon use and night-time recharge of culm water storage |
| topic_facet |
heat dissipation method root pressure sap flow vapor pressure deficit water recharge and balance bamboo circulation modeling diurnal activity evaporation heat flux physiological response pressure field recharge sap flow seasonal variation shoot stomatal conductance vapor pressure water budget water storage Bambusa vulgaris Phyllostachys acuta plant exudate rain water Bambusa circadian rhythm darkness photon photosynthesis physiology plant exudate plant root plant stem season temperature vapor pressure wood Bambusa Circadian Rhythm Darkness Photons Photosynthesis Plant Exudates Plant Roots Plant Stems Rain Seasons Temperature Vapor Pressure Water Wood |
| description |
To understand water-use strategies of woody bamboo species, sap flux density (Fd) in the culms of a woody bamboo (Bambusa vulgaris Schrader ex Wendland) was monitored using the thermal dissipation method. The daytime and night-time Fd were analyzed in the dry and rainy seasons. Additionally, diurnal changes in root pressure, culm circumference, and stomatal conductance (gs) were investigated to characterize the mechanisms used to maintain diurnal water balance of woody bamboos. Both in the dry and rainy seasons, daytime Fd responded to vapor pressure deficit (VPD) in an exponential fashion, with a fast initial increase in Fd when VPD increased from 0 to 1 kPa. The Fd and gs started to increase very fast as light intensity and VPD increased in the morning, but they decreased sharply once the maximum value was achieved. The Fd response of this woody bamboo to VPD was much faster than that of representative trees and palms growing in the same study site, suggesting its fast sap flow and stomatal responses to changes in ambient environmental factors. The Fd in the lower and higher culm positions started to increase at the same time in the morning, but the Fd in the higher culm position was higher than that of the lower culm in the afternoon. Consistently, distinct decreases in its culm circumference in the afternoon were detected. Therefore, unlike trees, water storage of bamboo culms was not used for its transpiration in the morning but in the afternoon. Nocturnal sap flow of this woody bamboo was also detected and related to root pressure. We conclude that this bamboo has fast sap flow/stomatal responses to irradiance and evaporative demands, and it uses substantial water storage for transpiration in the afternoon, while root pressure appears to be a mechanism resulting in culm water storage recharge during the night. © 2015 The Author. Published by Oxford University Press. All rights reserved. |
| format |
JOUR |
| author |
Yang, S.-J. Zhang, Y.-J. Goldstein, G. Sun, M. Ma, R.-Y. Cao, K.-F. |
| author_facet |
Yang, S.-J. Zhang, Y.-J. Goldstein, G. Sun, M. Ma, R.-Y. Cao, K.-F. |
| author_sort |
Yang, S.-J. |
| title |
Determinants of water circulation in a woody bamboo species: Afternoon use and night-time recharge of culm water storage |
| title_short |
Determinants of water circulation in a woody bamboo species: Afternoon use and night-time recharge of culm water storage |
| title_full |
Determinants of water circulation in a woody bamboo species: Afternoon use and night-time recharge of culm water storage |
| title_fullStr |
Determinants of water circulation in a woody bamboo species: Afternoon use and night-time recharge of culm water storage |
| title_full_unstemmed |
Determinants of water circulation in a woody bamboo species: Afternoon use and night-time recharge of culm water storage |
| title_sort |
determinants of water circulation in a woody bamboo species: afternoon use and night-time recharge of culm water storage |
| url |
http://hdl.handle.net/20.500.12110/paper_0829318X_v35_n9_p964_Yang |
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