PMID- 33873480
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20210420
IS  - 1469-8137 (Electronic)
IS  - 0028-646X (Linking)
VI  - 164
IP  - 1
DP  - 2004 Oct
TI  - Carbohydrate translocation determines the phenolic content of Populus foliage: a 
      test of the sink-source model of plant defense.
PG  - 157-164
LID - 10.1111/j.1469-8137.2004.01157.x [doi]
AB  - *  Here, we examine the influence of source-to-sink carbohydrate (CHO) flow on 
      the development of constitutive and inducible levels of phenylpropenoids in 
      hybrid poplar (Populus nigra x P. deltoides) foliage to determine if secondary 
      metabolic processes in plant modules can be inhibited in a predictable manner by 
      events such as herbivory and the development of new leaves and reproductive 
      structures, which alter the path of phloem-borne resources. *  Phenylpropenoid 
      concentrations were determined for developing foliage after CHO flow, measured as 
      the translocation of (13) C from labeled sources was manipulated. *  
      Phenylpropenoid metabolism in both unwounded and induced sink leaves was directly 
      and positively linked to rates of CHO import. Alterations in rates of 
      translocation yielded different results, depending on how CHO import was 
      affected: the removal of competing sinks rapidly and dramatically increased leaf 
      phenolic contents, whereas phenolic levels (and their inducibility) tended to be 
      reduced when import was interrupted. *  High and inducible sink strength in 
      developing poplar leaves provides resources for phenolic biosynthesis and, as a 
      result, restrictions or re-directions of CHOs affect the foliar quality. Sink 
      strength and the vascular architecture of plants, which confer upon them a 
      modular nature, can determine the direction and magnitude of defense responses in 
      trees.
FAU - Arnold, Tom
AU  - Arnold T
AD  - Department of Biology, Dickinson College, Carlisle, PA 17013, USA.
FAU - Appel, Heidi
AU  - Appel H
AD  - Pesticide Research Laboratory, Department of Entomology, Penn State University, 
      State College PA 19958, USA.
FAU - Patel, Vishal
AU  - Patel V
AD  - Pesticide Research Laboratory, Department of Entomology, Penn State University, 
      State College PA 19958, USA.
FAU - Stocum, Eileen
AU  - Stocum E
AD  - Department of Biology, College of Charleston, Charleston SC 29404, USA.
FAU - Kavalier, Adam
AU  - Kavalier A
AD  - Department of Biology, College of Charleston, Charleston SC 29404, USA.
FAU - Schultz, Jack
AU  - Schultz J
AD  - Pesticide Research Laboratory, Department of Entomology, Penn State University, 
      State College PA 19958, USA.
LA  - eng
PT  - Journal Article
PL  - England
TA  - New Phytol
JT  - The New phytologist
JID - 9882884
SB  - IM
OTO - NOTNLM
OT  - Populus
OT  - condensed tannin
OT  - induced defense
OT  - invertase
OT  - phyllotaxy
OT  - polyphenol
OT  - sink strength
EDAT- 2004/10/01 00:00
MHDA- 2004/10/01 00:01
CRDT- 2021/04/20 01:03
PHST- 2021/04/20 01:03 [entrez]
PHST- 2004/10/01 00:00 [pubmed]
PHST- 2004/10/01 00:01 [medline]
AID - 10.1111/j.1469-8137.2004.01157.x [doi]
PST - ppublish
SO  - New Phytol. 2004 Oct;164(1):157-164. doi: 10.1111/j.1469-8137.2004.01157.x.