TITLE

Resurrection Plants and the Secrets of Eternal Leaf

AUTHOR(S)
SCOTT, PETER
PUB. DATE
February 2000
SOURCE
Annals of Botany;Vol. 85 Issue 2, p159
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Most higher plants possess a phase in their life cycle in which tissues can survive desiccation. However, this is restricted to specialized tissues such as seeds and pollen. Resurrection plants are remarkable in that they can tolerate almost complete water loss in their vegetative tissues. The desiccated plant can remain alive in the dried state for several years. However, upon watering the plants rehydrate and are fully functional within 48 h. Underpinning this amazing ability is the capacity to accumulate large amounts of sucrose in the tissues. This sugar has the property of stabilizing enzymes and cellular structures in the absence of water. The sources of carbon that fuel sucrose synthesis are not known, but temporary carbohydrate stores and photosynthesis are the most likely candidates. On rewatering, the sucrose is metabolized rapidly as the tissues rehydrate. Increased expression of a number of genes in response to drought stress have been noted. A number of these are associated with metabolic pathways linked with primary carbohydrate metabolism. However, some genes related to LEA (Late Embryogenic Abundant) proteins have been isolated which suggests they too may play a role in maintaining tissue integrity during desiccation. How these mechanisms are integrated to enable resurrection plants to survive desiccation is discussed. Copyright 2000 Annals of Botany Company
ACCESSION #
44659397

 

Related Articles

  • Leaf-shape variation of Paederia foetida in Japan: reexamination of the small, narrow leaf form from Miyajima Island. Tsukaya, Hirokazu; Imaichi, Ryoko; Yokoyama, Jun // Journal of Plant Research;Jul2006, Vol. 119 Issue 4, p303 

    Variations in Paederia foetida L. leaf shape were examined to evaluate the taxonomic validity of the small, narrow leaf form of P. foetida f. microphylla Honda from Miyajima Island, Honshu, Japan. There is considerable variation in P. foetida individuals in terms of leaf size and leaf index...

  • Air-coupled broadband ultrasonic spectroscopy as a new non-invasive and non-contact method for the determination of leaf water status. Sancho-Knapik, Domingo; Álvarez-Arenas, Tom´s Gómez; Peguero-Pina, José Javier; Gil-Pelegrín, Eustaquio // Journal of Experimental Botany;Apr2010, Vol. 61 Issue 5, p1385 

    The implementation of non-destructive methods for the study of water changes within plant tissues and/or organs has been a target for some time in plant physiology. Recent advances in air-coupled ultrasonic spectroscopy have enabled ultrasonic waves to be applied to the on-line and real-time...

  • A new species of spiny Solanum (Solanaceae) from Peru. Stern, Stephen R. // PhytoKeys;2014, Issue 39, p27 

    A new species of Solanum is described from Peru. Solanum junctum S. Stern & M. Nee, sp nov. is a member of the Torva clade of the spiny solanums (Leptostemonum clade). The narrow corolla lobes and recurved prickles of S. junctum are similar to species in the Micracantha clade, but S. junctum...

  • Comparative Studies of Mucilage Cells in Different Organs in Some Species of Malva, Althaea and Alcea. Pakravan, M.; Abedinzadeh, H.; Safaeepur, J. // Pakistan Journal of Biological Sciences;2007, Vol. 10 Issue 15, p2603 

    Distribution of Mucilage Cells (MC) in leaves and petals of two species of Malva L. :Malva neglecta Wallr and M. nicaeensis All, one species of Altheae L.: A. officinalis L. and one species of Alcea L: A. angulata (Freyn and Sint.) Freyn and Sint. ex Iljin, have studied. Except of A. angulata...

  • CARACTERES XEROMORFOS FOLIARES DE NASSAUVIA LAGASCAE (COMPOSITAE). Ragonese, Ana Maria // Darwiniana;1990, Vol. 30 Issue 1-4, p1 

    The xeromorphic leaf characters of Nassauvia lagascae (Don) Meigen and its varieties, N. lagascae var. lanata (Phil.) Skottsberg and N. lagascae var. globosa Skottsberg, referred to section Caloptilium of subgenus Nassauvia, are described. All are herbaceous perennial plants, forming loose...

  • Proteomic analysis of the pulvinus, a heliotropic tissue, in Glycine max. Hakme Lee; Garrett, Wesley M.; Sullivan, Joseph; Forseth, Irwin; Natarajan, Savithiry S. // International Journal of Plant Biology;2014, Vol. 5 Issue 1, p8 

    Certain plant species respond to light, dark, and other environmental factors by leaf movement. Leguminous plants both track and avoid the sun through turgor changes of the pulvinus tissue at the base of leaves. Mechanisms leading to pulvinar turgor flux, particularly knowledge of the proteins...

  • Genome-Dependent Factors in the Development of Leaf Phototrophic Tissues in Diploid and Alloploid Wheat Species. Khramtsova, E. V.; Kiseleva, I. S. // Russian Journal of Plant Physiology;Mar/Apr2004, Vol. 51 Issue 2, p249 

    Growth and mesostructure of the photosynthetic apparatus were studied in leaves of ten Triticum L. species. Plants with the Au genome were shown to develop larger leaf assimilation areas due to expanding areas of individual leaves and an increase in the absolute growth rate. Leaf and mesophyll...

  • The influence of epidermal windows on the light environment within the leaves of six succulents. Egbert, Kathryn J.; Martin, Craig E.; Vogelmann, Thomas C. // Journal of Experimental Botany;May2008, Vol. 59 Issue 7, p1863 

    An omni-directional fibre optic microprobe was used to measure the quantity and quality of light within the leaves of six succulents having epidermal windows, three species having a subterranean growth habit (Haworthia truncata, Lithops olivacea, and Opthalmophyllum longum) and three growing...

  • Purification, Properties, and Localization of Two Carbonic Anhydrases from Amaranthus cruentus Leaves. Guliev, N. M.; Babaev, G. G.; Bairamov, Sh. M.; Aliev, D. A. // Russian Journal of Plant Physiology;Mar/Apr2003, Vol. 50 Issue 2, p213 

    The method has been developed for obtaining two purified forms of carbonic anhydrase (CA, A and B forms) from amaranth (Amaranthus cruentus L.) leaves. The method includes precipitation with ammonium sulfate, fractionation by ion-exchange chromatography on DEAE Sephadex A-50, gel filtration on...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

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

Try another library?
Sign out of this library

Other Topics