THE CARBON CANOPY ECONOMY OF THE ASSOCIATION BETWEEN COWPEA AND THE PARASITIC ANGIOSPERM STRIGA-GESNERIOIDES

被引:37
作者
GRAVES, JD [1 ]
PRESS, MC [1 ]
SMITH, S [1 ]
STEWART, GR [1 ]
机构
[1] UNIV LONDON UNIV COLL,DEPT BIOL,LONDON WC1E 6BT,ENGLAND
关键词
STRIGA-GESNERIOIDES; VIGNA-UNGUICULATA; PARASITIC ANGIOSPERM; PHOTOSYNTHESIS; RESPIRATION; CARBON BUDGET;
D O I
10.1111/j.1365-3040.1992.tb00975.x
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
The association between the parasite Striga gesnerioides and cowpea (Vigna unguiculata) was investigated using measurements of growth and gas exchange together with calculations of the carbon budget of the association. Striga gesnerioides has a very low photosynthetic capacity coupled with high rates of respiration. Even at photosynthetic light saturation shoots exhibit no net carbon gain. Thus S. gesnerioides is highly dependent on its host for carbon as well as for water and inorganic solutes. It is estimated that 70% of the carbon transferred from host to parasite is used in parasite respiration. infected cowpea had a lower photosynthetic capacity, at times less than half that of uninfected plants. Infection with S. gesnerioides reduced the growth of cowpea by 75%. Calculations indicate that the loss of carbon from the host by export to the parasite is more important than reduced photosynthetic capacity of the host in accounting for the observed growth reductions.
引用
收藏
页码:283 / 288
页数:6
相关论文
共 13 条
[1]  
AGGARWAL VD, 1985, COWPEA RES PRODUCTIO, P335
[2]  
Ba A. T., 1984, Striga: biology and control, P47
[3]   RIBULOSE 1,5-BIPHOSPHATE CARBOXYLASE ACTIVITY IN THE HOLOPARASITE LATHRAEA-CLANDESTINA L [J].
BRICAUD, CH ;
THALOUARN, P ;
RENAUDIN, S .
JOURNAL OF PLANT PHYSIOLOGY, 1986, 125 (3-4) :367-370
[4]   A CARBON BALANCE MODEL OF THE SORGHUM-STRIGA-HERMONTHICA HOST-PARASITE ASSOCIATION [J].
GRAVES, JD ;
PRESS, MC ;
STEWART, GR .
PLANT CELL AND ENVIRONMENT, 1989, 12 (01) :101-107
[5]   GROWTH AND CARBON ALLOCATION IN PENNISETUM-TYPHOIDES INFECTED WITH THE PARASITIC ANGIOSPERM STRIGA-HERMONTHICA [J].
GRAVES, JD ;
WYLDE, A ;
PRESS, MC ;
STEWART, GR .
PLANT CELL AND ENVIRONMENT, 1990, 13 (04) :367-373
[6]  
LARCHER W, 1980, PHYSL PLANT ECOLOGY
[7]  
PARKINSON KJ, 1985, PLANT CELL ENVIRON, V8, P223, DOI 10.1111/j.1365-3040.1985.tb01391.x
[8]   TRANSPIRATION AND CARBON ACQUISITION IN ROOT HEMIPARASITIC ANGIOSPERMS [J].
PRESS, MC ;
GRAVES, JD ;
STEWART, GR .
JOURNAL OF EXPERIMENTAL BOTANY, 1988, 39 (205) :1009-1014
[9]   PHYSIOLOGY OF THE INTERACTION OF ANGIOSPERM PARASITES AND THEIR HIGHER-PLANT HOSTS [J].
PRESS, MC ;
GRAVES, JD ;
STEWART, GR .
PLANT CELL AND ENVIRONMENT, 1990, 13 (02) :91-104
[10]   GAS-EXCHANGE CHARACTERISTICS OF THE SORGHUM-STRIGA HOST-PARASITE ASSOCIATION [J].
PRESS, MC ;
TUOHY, JM ;
STEWART, GR .
PLANT PHYSIOLOGY, 1987, 84 (03) :814-819