نتایج جستجو برای: plant leaves

تعداد نتایج: 445502  

2015
Yunfeng Li Zhijian Ye Yanfang Nie Jian Zhang Guo-Liang Wang Zhenzhong Wang

Rice blast, caused by the fungal pathogen Magnaporthe oryzae, is the most destructive disease of rice and causes tremendous losses of rice yield worldwide. To explore the molecular mechanisms involved in the rice-M. oryzae interaction, we conducted a time-course phosphoproteomic analysis of leaf samples from resistant and susceptible rice cultivars infected with M. oryzae. This data article con...

2001
P. Subramaniam Sunilkumar

The objective of this paper deal with the physico chemical aspects of certain colouring plants namely. Bixa orellana Linn. (Leaves) and Lawsonia inermis Linn (Leaves). The determined data under the physico chemical, chromatographic and spectrophotometric studies can be taken as a pharmacopoeial standards.

Journal: :TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A 1998

Journal: :Plant physiology 1973
H W Gausman W A Allen

Optical parameters (absorption coefficient k, infinite reflectance Rinfinity, scattering coefficient 8) are tabulated for seven wavelengths and analyzed for statistical differences for 30 plant species. The wavelengths are: 550 nm (green reflectance peak), 650 nm (chlorophyll absorption band), 850 nm (infrared reflectance plateau), 1450 nm (water absorption band), 1650 nm (reflectance peak foll...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 2004
Strahil Berkov Luba Evstatieva Simeon Popov

A GC/MS analysis of alkaloids from leaves, bulbs and roots of Pancratium maritimum was performed. From the identified 16 alkaloids, 5 alkaloids were reported for the first time for this plant. Several compounds with pharmacological activity were found. Haemanthamine was main alkaloid in the leaves and bulbs whereas galanthane was found to be main alkaloid in roots.

Journal: :Journal of evolutionary biology 2003
M van Kleunen M Fischer

Life history evolution of many clonal plants takes place with long periods of exclusively clonal reproduction and under largely varying ramet densities resulting from clonal reproduction. We asked whether life history traits of the clonal herb Ranunculus reptans respond to density-dependent selection, and whether plasticity in these traits is adaptive. After four generations of exclusively clon...

Journal: :Plant physiology 1954
J Clark

Though many investigations of photosynthesis have been carried out on detached parts of plants, the immediate effect of the severance of tree branches on their rate of photosynthesis has not been demonstrated. Lundeg'ardh (5) states that the photosynthetic capacity of a leaf (no species given) is not altered by cutting it from the plant, though it might be indirectly affected through changes in...

Journal: :Current Biology 2013
Florent Pantin Jeanne Renaud François Barbier Alain Vavasseur Didier Le Thiec Christophe Rose Thierry Bariac Stuart Casson Deirdre H. McLachlan Alistair M. Hetherington Bertrand Muller Thierry Simonneau

Plant water loss and CO2 uptake are controlled by valve-like structures on the leaf surface known as stomata. Stomatal aperture is regulated by hormonal and environmental signals. We show here that stomatal sensitivity to the drought hormone abscisic acid (ABA) is acquired during leaf development by exposure to an increasingly dryer atmosphere in the rosette plant Arabidopsis. Young leaves, whi...

Journal: :Plant physiology 1993
E Bell J E Mullet

A cDNA corresponding to the gene AtLox2 was isolated from an Arabidopsis thaliana library using a lipoxygenase (LOX) probe from soybean. AtLox2 encodes a 102-kD protein, AtLOX2, which has 42 to 45% amino acid sequence identity with other plant LOX sequences. The AtLOX2 sequence is more than 30 amino acids longer at the amino terminus than other plant LOX sequences, and this extension has featur...

2016
Anna Jakubska-Busse Maciej Janowicz Luiza Ochnio Beata Jackowska-Zduniak

Static properties of leaves with parallel venation, with particular emphasis on the genus EpipactisZinn, 1757 (Orchidaceae, Neottieae) have been modelled with coupled quasi-parallel elastic "beams." The non-linear theory of strongly bended beams have been employed. The resulting boundary-value problem has been solved numerically with the help of the finite-difference method. Possible dislocatio...

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