Visualization of water transport pathways in various organs on the fruit-bearing shoot of walnut trees

SUMMARY: To reveal the regular patterns of water transport in fruit-bearing shoots of walnut (Juglans regia), water transport pathways for various organs were observed using dye-tracing technique; water potential, water status and water transport rate were determined for each of these organs. Water...

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Autores principales:	Liu,Yang, Sun,Meng, Zhao,Shuang, Qi,Guohui, Zhang,Xuemei, Guo,Suping
Lenguaje:	English
Publicado:	Universidad Austral de Chile, Facultad de Ciencias Forestales 2020
Materias:	Juglans regia water dye-tracing water potential xylem
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002020000200193
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spelling	oai:scielo:S0717-920020200002001932020-10-23Visualization of water transport pathways in various organs on the fruit-bearing shoot of walnut treesLiu,YangSun,MengZhao,ShuangQi,GuohuiZhang,XuemeiGuo,Suping Juglans regia water dye-tracing water potential xylem SUMMARY: To reveal the regular patterns of water transport in fruit-bearing shoots of walnut (Juglans regia), water transport pathways for various organs were observed using dye-tracing technique; water potential, water status and water transport rate were determined for each of these organs. Water potential in the pedicel, petiole, lateral shoot and main shoot was -2.59, -2.85, -1.68 and -0.37 MPa, respectively. Significant differences were noted among various organs in terms of water status. The ratio of bound water to free water in the petiole was the highest (1.93 RBC), followed by the main shoot, lateral shoot and pedicel. Water transport speed in the petiole was the fastest (3.13 cm/min), followed by the lateral shoot, pedicel and main shoot. However, the water transport rate of the main shoot was the highest, and higher than the sum of the other three organs. The xylem in the petiole was separated from the main shoot; at the top of the main shoot, the xylem was divided into two parts, one of which was connected to the xylem of the pedicel and the other to the lateral shoot. During the shell-hardening period of fruits, the dye was found at the edge of the fruit vascular bundle, although, it was not at the central vascular bundle. No dye was found in the main and accessory buds, instead, only a small part of the xylem was dyed between the accessory bud and the main shoot. Water transport pathways were different for various organs. Thus, the transport and distribution of water in various organs was affected by their water potential, tissue structure and water requirement.info:eu-repo/semantics/openAccessUniversidad Austral de Chile, Facultad de Ciencias ForestalesBosque (Valdivia) v.41 n.2 20202020-08-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002020000200193en10.4067/S0717-92002020000200193
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Juglans regia water dye-tracing water potential xylem
spellingShingle	Juglans regia water dye-tracing water potential xylem Liu,Yang Sun,Meng Zhao,Shuang Qi,Guohui Zhang,Xuemei Guo,Suping Visualization of water transport pathways in various organs on the fruit-bearing shoot of walnut trees
description	SUMMARY: To reveal the regular patterns of water transport in fruit-bearing shoots of walnut (Juglans regia), water transport pathways for various organs were observed using dye-tracing technique; water potential, water status and water transport rate were determined for each of these organs. Water potential in the pedicel, petiole, lateral shoot and main shoot was -2.59, -2.85, -1.68 and -0.37 MPa, respectively. Significant differences were noted among various organs in terms of water status. The ratio of bound water to free water in the petiole was the highest (1.93 RBC), followed by the main shoot, lateral shoot and pedicel. Water transport speed in the petiole was the fastest (3.13 cm/min), followed by the lateral shoot, pedicel and main shoot. However, the water transport rate of the main shoot was the highest, and higher than the sum of the other three organs. The xylem in the petiole was separated from the main shoot; at the top of the main shoot, the xylem was divided into two parts, one of which was connected to the xylem of the pedicel and the other to the lateral shoot. During the shell-hardening period of fruits, the dye was found at the edge of the fruit vascular bundle, although, it was not at the central vascular bundle. No dye was found in the main and accessory buds, instead, only a small part of the xylem was dyed between the accessory bud and the main shoot. Water transport pathways were different for various organs. Thus, the transport and distribution of water in various organs was affected by their water potential, tissue structure and water requirement.
author	Liu,Yang Sun,Meng Zhao,Shuang Qi,Guohui Zhang,Xuemei Guo,Suping
author_facet	Liu,Yang Sun,Meng Zhao,Shuang Qi,Guohui Zhang,Xuemei Guo,Suping
author_sort	Liu,Yang
title	Visualization of water transport pathways in various organs on the fruit-bearing shoot of walnut trees
title_short	Visualization of water transport pathways in various organs on the fruit-bearing shoot of walnut trees
title_full	Visualization of water transport pathways in various organs on the fruit-bearing shoot of walnut trees
title_fullStr	Visualization of water transport pathways in various organs on the fruit-bearing shoot of walnut trees
title_full_unstemmed	Visualization of water transport pathways in various organs on the fruit-bearing shoot of walnut trees
title_sort	visualization of water transport pathways in various organs on the fruit-bearing shoot of walnut trees
publisher	Universidad Austral de Chile, Facultad de Ciencias Forestales
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002020000200193
work_keys_str_mv	AT liuyang visualizationofwatertransportpathwaysinvariousorgansonthefruitbearingshootofwalnuttrees AT sunmeng visualizationofwatertransportpathwaysinvariousorgansonthefruitbearingshootofwalnuttrees AT zhaoshuang visualizationofwatertransportpathwaysinvariousorgansonthefruitbearingshootofwalnuttrees AT qiguohui visualizationofwatertransportpathwaysinvariousorgansonthefruitbearingshootofwalnuttrees AT zhangxuemei visualizationofwatertransportpathwaysinvariousorgansonthefruitbearingshootofwalnuttrees AT guosuping visualizationofwatertransportpathwaysinvariousorgansonthefruitbearingshootofwalnuttrees
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Visualization of water transport pathways in various organs on the fruit-bearing shoot of walnut trees

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