TITLE

Age-related changes of photosynthesis rate and assimilates export in Agathis brownii Lem. (Araucariaceae) perennial leaves

AUTHOR(S)
Arbicheva, A. I.; Pautov, A. A.; Voitsekhovskaya, O. V.
PUB. DATE
December 2012
SOURCE
Vestnik Sankt-Peterburgskogo universiteta, Seriia 7: Geologia, G;2012, Issue 4, p20
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Perennial leaves of Agathis brownii remain alive on the stems for over 10 years. The article shows that the photosynthetic gas exchange rate of the leaves of A. brownii decreased with leaf age while the amount of photosynthetic pigments increased, which makes it possible to characterize the 7-years-old as "more shadow" comparing to the first-year-leaves. The number of sieve cells with preserved structure decreases with the age of the leaves which is accompanied with a drop in the phloem loading rate. The source function of several-years-old leaves thus diminishes but their positive carbon balance is probably maintained.
ACCESSION #
94324698

 

Related Articles

  • Age-related changes of photosynthesis rate and assimilates export in Agathis brownii Lem. (Araucariaceae) perennial leaves. Arbicheva, A. I.; Pautov, A. A.; Voitsekhovskaya, O. V. // Vestnik Sankt-Peterburgskogo universiteta, Seriia 7: Geologia, G;2012, Issue 4, p136 

    Perennial leaves of Agathis brownii remain alive on the stems for over 10 years. The article shows that the photosynthetic gas exchange rate of the leaves of A. brownii decreased with leaf age while the amount of photosynthetic pigments increased, which makes it possible to characterize the...

  • Structural Changes of Lignified Tissues from Sugarcane Leaves Induced by Smut (Sporisorium scitamineum) Virulence Factors. Alarc�n, Borja; Santiago, Roc�o; Vicente, Carlos; Legaz, Mar�a Estrella // Journal of Life Sciences;Mar2012, Vol. 6 Issue 3, p287 

    Sugarcane leaf shows the classical arrangement of cells, which defines a C4 species. Vascular bundles consist of xylem, phloem and fibres, surrounded by an outer layer of sclereids and an inner ring of stone cells associated with the phloem. Some sclereids located below and above the vascular...

  • Could ROS signals drive tissue-specific clocks? Schippers, Jos H. M.; Lai, Alvina G.; Mueller-Roeber, Bernd; Dijkwel, Paul P. // Transcription (2154-1264);Dec2013, Vol. 4 Issue 5, p206 

    The article discusses the potential role of reactive oxygen species (ROS) signals in driving tissue-specific circadian clocks. It is asserted that ROS can be a synchronizer of tissue-specific clocks since they can move rapidly through the vascular bundles in plants and from cell to cell....

  • Development and function of caryopsis transport tissues in maize, sorghum and wheat. Zheng, Yankun; Wang, Zhong; Gu, Yunjie // Plant Cell Reports;Jul2014, Vol. 33 Issue 7, p1023 

    Cereal caryopsis transport tissues are essential channels via which nutrients are transported into the embryo and endosperm. There are differences and similarities between caryopsis transport tissues of maize, sorghum and wheat. Vascular bundle, endosperm transfer cells, endosperm conducting...

  • Statistical Mapping of Maize Bundle Intensity at the Stem Scale Using Spatial Normalisation of Replicated Images. Legland, David; Devaux, Marie-Françoise; Guillon, Fabienne // PLoS ONE;Mar2014, Vol. 9 Issue 3, p1 

    The cellular structure of plant tissues is a key parameter for determining their properties. While the morphology of cells can easily be described, few studies focus on the spatial distribution of different types of tissues within an organ. As plants have various shapes and sizes, the...

  • Suppression of Granal Development and Accumulation of Rubisco in Different Bundle Sheath Chloroplasts of the C4 Succulent Plant Portulaca grandiflora. Nishioka, Daisuke; Miyake, Hiroshi; Taniguchi, Takeshi // Annals of Botany;1996, Vol. 77 Issue 6, p629 

    Chlorenchyma of Portulaca grandiflora, an NADP-malic enzyme type succulent C4 plant, consists of several types of green cells. Typical bundle sheath and mesophyll cells were located around the peripheral vascular bundles in the cylindrical leaf. Water storage cells with small and few...

  • Indirect suppression of photosynthesis on individual leaves by arthropod herbivory. Nabity, Paul D.; Zavala, Jorge A.; DeLucia, Evan H. // Annals of Botany;Feb2009, Vol. 103 Issue 4, p655 

    Background: Herbivory reduces leaf area, disrupts the function of leaves, and ultimately alters yield and productivity. Herbivore damage to foliage typically is assessed in the field by measuring the amount of leaf tissue removed and disrupted. This approach assumes the remaining tissues are...

  • Supply and demand: sink regulation of sugar accumulation in sugarcane. McCormick, A. J.; Watt, D. A.; Cramer, M. D. // Journal of Experimental Botany;Feb2009, Vol. 60 Issue 2, p357 

    Sugarcane (Saccharum spp. hybrids) accumulates sucrose to high concentrations and, as a result, has been the focus of extensive research into the biochemistry and physiology of sucrose accumulation. Despite this, the relationship between source leaf photosynthetic activity and sucrose...

  • Is the onset of senescence in leaf cells of intact plants due to low or high sugar levels? van Doorn, Wouter G. // Journal of Experimental Botany;May2008, Vol. 59 Issue 8, p1963 

    This review examines the hypotheses that developmental programmed cell death in leaves is mediated (i) by sugar starvation in the leaf cells or (ii) by sugar accumulation in these cells. Experimental evidence for both hypotheses is critically discussed and found to be lacking. For example, some...

Share

Read the Article

Courtesy of

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics