PL EN


Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
2011 | 59 | 3 |

Tytuł artykułu

Ecophysiological mechanisms of succulent survival in natural conditions: photosynthetic carbon fixation in Caralluma acutangula (Decne. N.E.Br.) (Asclepiadaceae)

Warianty tytułu

Języki publikacji

EN

Abstrakty

EN
Physiological adaptation to arid environments in many desert succulents involves crassulacean acid metabolism (CAM) with modified photosynthetic carbon acquisition aimed at improving water use efficiency. The leafless perennial Caralluma acutangula is an abundant stem succulent in the arid regions of subtropical zones of the Arabian Peninsula. These arid regions southwest of Saudi Arabia are characterized by a short three months wet season (June–August) and a long dry season. The wet season is characterized by high temperature, high evaporation, and strong sand storms. Research presented in this paper involved water status, diffusive conductance, and crassulacean acid metabolism (CAM) of both seedlings and mature C. acutangula plants growing under natural conditions. Plant water status was determined by monitoring changes in stem water content, diffusive conductance was monitored using porometry technique, and CAM was detected by determining chlorenchyma titratable acidity. Seedling establishment of C. acutangula takes place in the short wet season during which seedlings depend on the high productivity C3 mode of photosynthesis. Mature plants are obligate CAM plants exhibiting this mode of carbon fixation during both the wet and the dry seasons. As the dry season progresses dampening of CAM acidification-deacidification cycles and low stomatal conductance denote the switch of mature plants from CAM to CAM-idling in response to protracted water stress. Our results show that the C3 mode of photosynthesis in C. acutangula seedlings during early ontogeny is due to exposure of seedlings to suboptimal irradiance in the shade of other plant species at the study site. This C3 mode of photosynthesis is beneficial for fast seedling establishment. Our results also show that the shift from CAM to CAM-idling in mature C. acutangula plants occurs in response to protracted water stress, which is favourable for survival of this succulent in its inimical arid habitat.

Wydawca

-

Rocznik

Tom

59

Numer

3

Opis fizyczny

p.437-442,fig.,ref.

Twórcy

autor
  • Faculty of Science, Jazan University, Jazan, Jazan, Saudi Arabia
autor

Bibliografia

  • Adams W.W., Osmond B., Sharkey T.D. 1987 – Responses of two CAM species to different irradiances during growth and susceptibility to photoinhibition by high light – Plant Physiol. 83: 213–218.
  • Altesor A., Ezcurra E., Silva C. 1992 – Changes in the photosynthetic metabolism during the early ontogeny of four cactus species – Acta Oecologica, 13: 777–785.
  • Ayala-Cordero G., Terrazas T., Lopez-Mata L., Trejio C. 2006 – Morphoanatomical changes and photosynthetic metabolism of Stenocereus beneckei seedlings under soil water deficit – J. Exp. Bot. 57: 3165–3174.
  • Bobich E.G., North G.B. 2009 – Structural implications of succulence: architecture, anatomy, and mechanics of photosynthetic stem succulents, and leaf succulents (In: Perspectives in Biophysical Plant Ecophysiology: a Tribute to Park S. Nobel, Eds: E. De la Barrera, W.K. Smith) – Universidad Nacional Autonoma de Mexico, Mexico, pp. 3–37.
  • Borland A.M., Maxwell K., Griffiths H. 2000 – Ecophysiology of plants with Crassulacean Acid Metabolism (In: Photosynthesis: Physiology and Metabolism, Eds: R. Leegood, T.D. Sharkey, S. von Caemmerer) – Kluwer Academic Publishers, Amsterdam, pp. 583–605.
  • Brown G.F., Jackson R.O. 1979 – Geologic map of the Asir quadrangle – Ministry of Petroleum and Mineral Resources, Directorate General of Mineral Resources, Jeddah, Saudi Arabia, 232pp.
  • Collenette S. 1999 – Wildflowers of Saudi Arabia – NCWCD, Riyadh, Saudi Arabia, 525pp.
  • Dodd A.N., Borland A.M., Haslam R.P., Griffiths H., Maxwell K. 2002 – Crassulacean acid metabolism: Plastic fantastic – J. Exp. Bot. 53: 569–580.
  • Drennan P.M. 2009 – Temperature influences on plant species of arid and semi-arid regions with emphasis on CAM succulents(In: Perspectives in Biophysical Plant Ecophysiology, a Tribute to Park S. Nobel., Eds: E. De la Barrera, W.K. Smith) – Universidad Nacional Autonoma de Mexico, Mexico, pp. 57–94.
  • Fisher M., Membery D.A. 1998 – Climate (In: Vegetation of the Arabian Peninsula, Eds: S.A. Ghazanfar, M. Fisher) – Kluwer Academic Publishers, Amsterdam, pp. 5–38.
  • Gibson A.C. 1996 – Structure-Function Relations of Warm Desert Plants – Springer-Verlag, Berlin, 216 pp.
  • Grace J. 1997 – Plant Water Relations (In: Plant Ecology, Ed. M.J. Crawley) – Blackwell Science Publishers, Oxford, pp. 28–50.
  • Hernandez-Gonzalez O., Villarreal O.B. 2007 – Crassulacean Acid Metabolism photosynthesis in columnar cactus seedlings during ontogeny: The effect of light on nocturnal acidity accumulation and chlorophyll fluorescence – Am. J. Bot. 94: 1344–1351.
  • Keeley J.A., Rundel P.W. 2003 – Evolution of CAM and C4 carbon-concentrating mechanisms – Intl. J. Plant Sci. 164: S55–S77.
  • Loza-Cornejo S.T., Terrazas L., Lopez-Mata L., Trejo C. 2003 – Characteristicas morfo-anatomicas y metabolism fotosintetico en plantulas de Stenocereus queretaroensis (Cactaceae): su significado adaptive – Interciencia, 28: 83–89.
  • Luttge U. 2002 – CO2-concentrating: consequences in crassulacean acid metabolism – J. Exp. Bot. 53: 2131–2142.
  • Luttge U. 2004 – Ecophysiology of crassulacean acid metabolism (CAM) – Ann. Bot. 93: 629–652.
  • Luttge U. 2008 – Stem CAM in arborescent succulents – Trees, 22: 139–148.
  • Mauseth J.D. 2000 – Theoretical aspects of surface-to-volume ratios and water storage capacities of succulent shoots – Am. J. Bot. 87: 1107–1115.
  • Middleton N.J. 1986 – Dust storms in the Middle East – J. Arid. Environ. 10: 83–96.
  • Muller E. 1984 – South Tihama and Farasan Islands (In: Quaternary Period in Saudi Arabia, Eds: A. Jado, J.G. Zotl) – Springer-Verlag, Wien, pp. 141–150.
  • Nobel P.S. 1988 – Environmental Biology of Agaves and Cacti – Cambridge University Press, Cambridge, 284 pp.
  • Nobel P.S. 2009. Physicochemical and Environmental Plant Physiology – Academic Press, Oxford, 584 pp.
  • Nobel P.S., Hartsock T.L. 1983 – Relationships between photosynthetically active radiation, nocturnal acid accumulation, and CO2 uptake for a crassulacean acid metabolism plant Opuntia ficus-indica – Plant Physiol. 71: 71–75.
  • Nobel P.S., Hartsock T.L. 1986 – Leaf and stem CO2 uptake in the three subfamilies of the Cactaceae – Plant Physiol. 80: 913–917.
  • Nobel P.S., De la Barrera E. 2002 – Stem water relations and net CO2 uptake for a hemiepiphytic cactus during short-term drought – J. Exp. Bot. 48: 129–137.
  • Osmond C.B., Adams W.W., Smith S.T. 1991 – Crassulacean Acid Metabolism. (In: Plant Physiological Ecology, Eds: R.W. Pearcy, J. Ehleringer, H.A. Mooney, P.W. Rundel) – Chapman and Hall, London, pp. 255–280.
  • Sayed O.H. 1998 – Phenomorphology and ecophysiology of desert succulents in eastern Arabia – J. Arid. Environ. 40: 177–189.
  • Sayed O.H. 2001a – Aridity and Plant Survival in Desert Environments (In: Ecology of Desert Environments, Ed. I. Prakash) – Scientific Publishers, Jodhpur, India, pp. 87–103.
  • Sayed O.H. 2001b – Crassulacean Acid Metabolism 1975–2000, A Check List – Photosynthetica, 39: 339–352.
  • Schulze, E-D., Beck, E., Muller-Hohenstein, K. 2005 – Plant Ecology – Springer- Verlag, Berlin, 702 pp.
  • Ting I.P., Sipes D. 1985 – Metabolic modifications of crassulacean acid metabolism in CAM-idling and CAM-cycling (In: Night Fixation and CO2 Metabolism, Eds: P.W. Luden, J.E. Burris) – Elsevier, Amsterdam, pp. 371–378.
  • Winter K., Smith J.A.C. 1996 – An introduction to crassulacean acid metabolism. Biochemical principles and ecological diversity (In: Crassulacean acid metabolism. Biochemistry, ecophysiology end evolution, Eds: K. Winter, J.A.C. Smith) – Springer Verlag, Berlin, pp. 1–13.

Typ dokumentu

Bibliografia

Identyfikatory

Identyfikator YADDA

bwmeta1.element.dl-catalog-615048f4-5773-456a-a9c4-503d34f1c070
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.