Photoinhibition of photosynthesis in dwarf bean ( Phaseolus vulgaris L.) leaves: effect of sink-limitations induced by changes in daily photon receipt

Planta ◽  
1998 ◽  
Vol 205 (2) ◽  
pp. 189-196 ◽  
Author(s):  
Dennis H. Greer
Keyword(s):  
Phaseolus Vulgaris ◽  
Photoinhibition Of Photosynthesis ◽  
Phaseolus Vulgaris L ◽  
Dwarf Bean

Resistance to bean common mosaic virus in dwarf beans (Phaseolus vulgaris L.)

1979 ◽  
Vol 92 (1) ◽  
pp. 101-108 ◽  
Author(s):  
D. G. A. Walkey ◽  
N. L. Innes
Keyword(s):  
Phaseolus Vulgaris ◽  
Mosaic Virus ◽  
Dominant Gene ◽  
Bean Common Mosaic Virus ◽  
Phaseolus Vulgaris L ◽  
Dry Bean ◽  
Group Iva ◽  
Dwarf Bean

SummaryNumerous dwarf bean accessions were screened for resistance to three strains of bean common mosaic virus (BCMV). Many lines were resistant to a strain of BCMV isolated at Wellesbourne (NVRS) and the Dutch NL4 strain, but only a few lines showed resistance or tolerance to the Dutch NL3 strain. The NVRS strain was found to belong to BCMV Group IVa.Hybridization experiments showed that resistance to the NVRS strain of BCMV in the dry bean cvs Seafarer and Aurora was controlled by a dominant gene and that in Seafarer this was probably the dominant I gene originally found in Corbett Refugee.

Photoinhibition of Photosynthesis Causes a Reduction in Vegetative Growth Rates of Dwarf Bean (Phaseolus vulgaris) Plants

1995 ◽  
Vol 22 (4) ◽  
pp. 511 ◽  
Author(s):  
WA Laing ◽  
DH Greer ◽  
TA Schnell
Keyword(s):  
Phaseolus Vulgaris ◽  
Growth Rates ◽  
Causal Link ◽  
Photon Flux ◽  
O2 Evolution ◽  
Similar Amount ◽  
Photoinhibition Of Photosynthesis ◽  
Relative Growth Rates ◽  
Inhibition Of Growth ◽  
Dwarf Bean

Effects of photoinhibition of photosynthesis were assessed on growth rates of dwarf bean (Phaseolus vulgaris L.). Plants were grown at four photon flux densities (PFDs) ranging from 300 to 1000 pmol m-2 s-1 and at 25/20�C and 17.5/17.5�C. Plants were also grown and transferred from 25 to 17.5�C either at 500 and 1300 μmol m-2 s-1 or from 500 to 1300 μmol m-2 s-1. Relative growth rates (RGRs) were determined by destructive harvests and photoinhibition was assessed by fluorescence and photon yields of O2 evolution. Carotenoid pigments were analysed by HPLC. The RGRs were PFD-dependent, increasing to a maximum at 430 μmol mm-2 s-1 at 17.5�C and at 650 μmol m-2 s-1 at 25�C. At 25�C, growth rates at 1300 μmol m-2 s-1 were inhibited about 25% over that at light saturation. Transferring the plants from 25 to 17.5�C at constant PFD reduced RGR by a similar amount. Concurrently increasing the PFD resulted in a further 9% reduction in RGR. These changes were consistent with photoinhibition-induced limitations on photosynthesis. Correlated with growth rate reductions were marked changes in both photon yield and FvFm, revealing a causal link between photoinhibition of photosynthesis and inhibition of growth rates. However, acclimation occurred via zeaxanthin-mediated photoprotection during exposure to the photoinhibitory conditions, ameliorating the longer term effects of photoinhibition on growth.

ĐIỀU TRA, TINH SẠCH VÀ TÌM HIỂU TÍNH CHẤT ĐẶC TRƯNG CỦA LECTIN MỘT SỐ GIỐNG ĐẬU CÔ VE (PHASEOLUS VULGARIS L.)

2013 ◽  
Vol 75 (6) ◽  
Author(s):  
Cao Đăng Nguyên ◽  
Nguyễn Thị Cẩm Hạnh
Keyword(s):  
Phaseolus Vulgaris ◽  
Phaseolus Vulgaris L ◽  
White Bean

Đã điều tra lectin của 6 giống đậu cô ve thấy rằng cả 6 giống đều có hoạt tính lectin trong đó giống đậu cove hạt trắng dạng bụi (white bean core bush type white seeds) có hoạt tính lectin mạnh nhất, đặc biệt đối với hồng cầu trâu, bò, lợn. Lectin của 6 giống này đều không có biểu hiện đặc hiệu nhóm máu. Lectin đậu cove hạt trắng dạng bụi hoạt động tốt nhất ở nhiệt độ 300C – 400C, pH 6,8 – 7,6. Các đường α-D-glucose, α-D-galactose, D-mannose, D-fructose, D-saccharide,  D-lactose, D-arabinose và D-manitose ở nồng độ 0,05 – 0,1 M có tác dụng kìm hãm hoạt tính của lectin đậu cove hạt trắng dạng bụi. Lectin này cũng bị kìm hãm bởi protein của một số huyết thanh người và động vật (trâu, bò, lợn). Đã tinh sạch lectin đậu cove hạt trắng dạng bụi có độ tinh sạch gấp khoảng 52 lần so với dịch thô ban đầu. Trên gel polyacrylamide thấy xuất hiện 5 band có khối lượng phân tử trong khoảng 30 – 97 kDa.

Análisis de la variabilidad genética en poblaciones primitivas y silvestres de Phaseolus vulgaris, mediante marcadores bioquímicos y moleculares

2006 ◽  
Author(s):  
◽  
Marta Zulema Galván
Keyword(s):  
Phaseolus Vulgaris ◽  
Phaseolus Vulgaris L

El poroto común (Phaseolus vulgaris L.) es una leguminosa originaria de América y representa un componente importante en la dieta de la población latinoamericana por su alto contenido en proteínas y carbohidratos. El poroto cultivado se originó de los porotos silvestres, que son plantas anuales, herbáceas y trepadoras, que se distribuyen desde el norte de México hasta el noroeste de la Argentina. Estudios basados en caracteres morfológicos, bioquímicos y moleculares revelaron que tanto dentro de las variedades cultivadas como de las silvestres existen dos acervos génicos principales, uno Andino y el otro Mesoamericano. Las provincias del Noroeste Argentino (NOA) albergan un gran número de porotos silvestres y de variedades locales tradicionales (primitivas o “landraces”) mantenidas durante años en un sistema de cultivo tradicional. Sin embargo muchas de estas poblaciones están en peligro de extinción debido a las presiones de explotación forestal y pastoreo existentes en la zona, por lo que resulta de fundamental importancia su recolección y estudio. En esta tesis se analizó la variabilidad genética de un grupo de poblaciones silvestres y primitivas de poroto común del NOA, recolectadas en diferentes sitios de las provincias fitogeográficas de las Yungas, Prepuna y del Chaco, entre los 1300 y 2900 msnm, utilizando marcadores bioquímicos (proteínas de reserva de las semillas: faseolinas) y moleculares (RAPD e ISSR).

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