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Using Direct Phloem Transport Manipulation to Advance Understanding of Carbon Dynamics in Forest Trees

Rademacher, Tim T. ; Basler, David ; Eckes-Shephard, Annemarie H. LU orcid ; Fonti, Patrick ; Friend, Andrew D. ; Le Moine, Jim and Richardson, Andrew D. (2019) In Frontiers in Forests and Global Change 2.
Abstract
Carbon dynamics within trees are intrinsically important for physiological functioning, in
particular growth and survival, as well as ecological interactions on multiple timescales.
Thus, these internal dynamics play a key role in the global carbon cycle by determining
the residence time of carbon in forests via allocation to different tissues and pools, such
as leaves, wood, storage, and exudates. Despite the importance of tree internal carbon
dynamics, our understanding of how carbon is used in trees, once assimilated, has major
gaps. The primary tissue that transports carbon from sources to sinks within a tree is the
phloem. Therefore, direct phloemtransportmanipulation techniques have the potential... (More)
Carbon dynamics within trees are intrinsically important for physiological functioning, in
particular growth and survival, as well as ecological interactions on multiple timescales.
Thus, these internal dynamics play a key role in the global carbon cycle by determining
the residence time of carbon in forests via allocation to different tissues and pools, such
as leaves, wood, storage, and exudates. Despite the importance of tree internal carbon
dynamics, our understanding of how carbon is used in trees, once assimilated, has major
gaps. The primary tissue that transports carbon from sources to sinks within a tree is the
phloem. Therefore, direct phloemtransportmanipulation techniques have the potential to
improve understanding of numerous aspects of internal carbon dynamics. These include
relationships between carbon assimilation, nonstructural carbon availability, respiration
for growth and tissue maintenance, allocation to, and remobilization from, storage
reserves, and long-term sequestration in lignified structural tissues. This review aims
to: (1) introduce the topic of direct phloem transport manipulations, (2) describe the
three most common methods of direct phloem transport manipulation and review their
mechanisms, namely (i) girdling, (ii) compression and (iii) chilling; (3) summarize the known
impacts of these manipulations on carbon dynamics and use in forest trees; (4) discuss
potential collateral effects and compare the methods; and finally (5) highlight outstanding
key questions that relate to tree carbon dynamics and use, and propose ways to address
them using direct phloem transport manipulation. (Less)
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author
; ; ; ; ; and
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Carbon dynamics, Tree growth, phloem, girdling, compression, chilling, carbon sink, source, allocation
in
Frontiers in Forests and Global Change
volume
2
pages
17 pages
publisher
Frontiers Media S. A.
external identifiers
  • scopus:85096383056
ISSN
2624-893X
DOI
10.3389/ffgc.2019.00011
language
English
LU publication?
no
id
059e3320-97cf-4f54-a6f7-b52d0123bd46
date added to LUP
2021-05-11 16:13:08
date last changed
2022-04-27 01:57:10
@article{059e3320-97cf-4f54-a6f7-b52d0123bd46,
  abstract     = {{Carbon dynamics within trees are intrinsically important for physiological functioning, in<br/>particular growth and survival, as well as ecological interactions on multiple timescales.<br/>Thus, these internal dynamics play a key role in the global carbon cycle by determining<br/>the residence time of carbon in forests via allocation to different tissues and pools, such<br/>as leaves, wood, storage, and exudates. Despite the importance of tree internal carbon<br/>dynamics, our understanding of how carbon is used in trees, once assimilated, has major<br/>gaps. The primary tissue that transports carbon from sources to sinks within a tree is the<br/>phloem. Therefore, direct phloemtransportmanipulation techniques have the potential to<br/>improve understanding of numerous aspects of internal carbon dynamics. These include<br/>relationships between carbon assimilation, nonstructural carbon availability, respiration<br/>for growth and tissue maintenance, allocation to, and remobilization from, storage<br/>reserves, and long-term sequestration in lignified structural tissues. This review aims<br/>to: (1) introduce the topic of direct phloem transport manipulations, (2) describe the<br/>three most common methods of direct phloem transport manipulation and review their<br/>mechanisms, namely (i) girdling, (ii) compression and (iii) chilling; (3) summarize the known<br/>impacts of these manipulations on carbon dynamics and use in forest trees; (4) discuss<br/>potential collateral effects and compare the methods; and finally (5) highlight outstanding<br/>key questions that relate to tree carbon dynamics and use, and propose ways to address<br/>them using direct phloem transport manipulation.}},
  author       = {{Rademacher, Tim T. and Basler, David and Eckes-Shephard, Annemarie H. and Fonti, Patrick and Friend, Andrew D. and Le Moine, Jim and Richardson, Andrew D.}},
  issn         = {{2624-893X}},
  keywords     = {{Carbon dynamics; Tree growth; phloem; girdling; compression; chilling; carbon sink; source; allocation}},
  language     = {{eng}},
  month        = {{05}},
  publisher    = {{Frontiers Media S. A.}},
  series       = {{Frontiers in Forests and Global Change}},
  title        = {{Using Direct Phloem Transport Manipulation to Advance Understanding of Carbon Dynamics in Forest Trees}},
  url          = {{http://dx.doi.org/10.3389/ffgc.2019.00011}},
  doi          = {{10.3389/ffgc.2019.00011}},
  volume       = {{2}},
  year         = {{2019}},
}