Journal Article

PreJuSER-1848

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Environmental Effects on Spatial and Temporal Patterns of Leaf and Root Growth

Walter, A.FZJ* ; Silk, W. K. ; Schurr, U.FZJ*

2009
Annual Reviews Inc. Palo Alto, Calif.

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Please use a persistent id in citations: doi:10.1146/annurev.arplant.59.032607.092819

Abstract: Leaves and roots live in dramatically different habitats, but are parts of the same organism. Automated image processing of time-lapse records of these organs has led to understanding of spatial and temporal patterns of growth on time scales from minutes to weeks. Growth zones in roots and leaves show distinct patterns during a diel cycle (24 h period). In dicot leaves under nonstressful conditions these patterns are characterized by endogenous rhythms, sometimes superimposed upon morphogenesis driven by environmental variation. In roots and monocot leaves the growth patterns depend more strongly on environmental fluctuations. Because the impact of spatial variations and temporal fluctuations of above- and belowground environmental parameters must be processed by the plant body as an entire system whose individual modules interact on different levels, growth reactions of individual modules are often highly nonlinear. A mechanistic understanding of plant resource use efficiency and performance in a dynamically fluctuating environment therefore requires an accurate analysis of leaf and root growth patterns in conjunction with knowledge of major intraplant communication systems and metabolic pathways.

Keyword(s): Plant Leaves: growth & development (MeSH) ; Plant Roots: growth & development (MeSH) ; J ; growth analysis (auto) ; image processing (auto) ; carbohydrate metabolism (auto) ; environmental control (auto) ; plant-environment interactions (auto)

Note: The authors' work was supported by the Forschungszentrum Julich in the Helmholtz Association and grants from the German Science Foundation (DFG) and the Alexander von Humboldt Foundation. Thanks to Barry Osmond, Mark Stitt, Ernst Detlef Schulze, and Bernd Jahne for generating unique interdisciplinary ground in ecology, physiology, molecular biology, and physics. Special thanks to Hanno Scharr for essential contributions through development of image sequence analysis useful for plant scientists, and to all members of the workgroups contributing to the insight in root and leaf growth patterns through experiments, concepts, and discussions. Thanks to the U.S. National Science Foundation and Department of Agriculture for support to the laboratory of WS. over the years, to the Kearney Foundation of Soil Science for funding rhizosphere research, and to Michelle Watt for an inspiring sabbatical collaboration.

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Research Program(s):

1. Terrestrische Umwelt (P24)

Appears in the scientific report 2009

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Database coverage:
; JCR ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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