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Title: Drought impacts on phloem transport

Abstract

We report drought impacts on phloem transport have attracted attention only recently, despite the well-established, and empirically verified theories on drought impacts on water transport in plants in general. This is because studying phloem transport is challenging. Phloem tissue is relatively small and delicate, and it has often been assumed not to be impacted by drought, or having insignificant impact on plant function or survival compared to the xylem. New evidence, however, suggests that drought responses of the phloem might hold the key for predicting plant survival time during drought or revival capacity after drought. Lastly, this review summarizes current theories and empirical evidence on how drought might impact phloem transport, and evaluates these findings in relation to plant survival during drought.

Authors:
ORCiD logo [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program
OSTI Identifier:
1427379
Report Number(s):
LA-UR-17-28969
Journal ID: ISSN 1369-5266
Grant/Contract Number:  
AC52-06NA25396
Resource Type:
Accepted Manuscript
Journal Name:
Current Opinion in Plant Biology
Additional Journal Information:
Journal Volume: 43; Journal Issue: C; Journal ID: ISSN 1369-5266
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; Biological Science

Citation Formats

Sevanto, Sanna Annika. Drought impacts on phloem transport. United States: N. p., 2018. Web. doi:10.1016/j.pbi.2018.01.002.
Sevanto, Sanna Annika. Drought impacts on phloem transport. United States. doi:10.1016/j.pbi.2018.01.002.
Sevanto, Sanna Annika. Mon . "Drought impacts on phloem transport". United States. doi:10.1016/j.pbi.2018.01.002. https://www.osti.gov/servlets/purl/1427379.
@article{osti_1427379,
title = {Drought impacts on phloem transport},
author = {Sevanto, Sanna Annika},
abstractNote = {We report drought impacts on phloem transport have attracted attention only recently, despite the well-established, and empirically verified theories on drought impacts on water transport in plants in general. This is because studying phloem transport is challenging. Phloem tissue is relatively small and delicate, and it has often been assumed not to be impacted by drought, or having insignificant impact on plant function or survival compared to the xylem. New evidence, however, suggests that drought responses of the phloem might hold the key for predicting plant survival time during drought or revival capacity after drought. Lastly, this review summarizes current theories and empirical evidence on how drought might impact phloem transport, and evaluates these findings in relation to plant survival during drought.},
doi = {10.1016/j.pbi.2018.01.002},
journal = {Current Opinion in Plant Biology},
number = C,
volume = 43,
place = {United States},
year = {2018},
month = {2}
}

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Cited by: 11 works
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Figures / Tables:

Figure 1 Figure 1: A schematic presentation on how drought impacts the whole stem, highlighting a phloem conduit. In moist conditions (left) even relatively low solute concentrations in the phloem can maintain hydraulic equilibrium with the xylem and pull water from the transpiration stream to the phloem. During drought (right), the tissuesmore » shrink, high solute concentrations in the phloem cells and conduits are needed to keep the water from flowing to the drying xylem.« less

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