نتایج جستجو برای: petals carotenoid

تعداد نتایج: 8456  

2014
Timothy Butler Cynthia Dick Matthew L. Carlson Justen B. Whittall

Angiosperms are renown for their diversity of flower colors. Often considered adaptations to pollinators, the most common underlying pigments, anthocyanins, are also involved in plants' stress response. Although the anthocyanin biosynthetic pathway is well characterized across many angiosperms and is composed of a few candidate genes, the consequences of blocking this pathway and producing whit...

Journal: :Plant physiology 2013
Haixia Pei Nan Ma Ji Tian Jing Luo Jiwei Chen Jing Li Yi Zheng Xiang Chen Zhangjun Fei Junping Gao

Cell expansion is crucial for plant growth. It is well known that the phytohormone ethylene functions in plant development as a key modulator of cell expansion. However, the role of ethylene in the regulation of this process remains unclear. In this study, 2,189 ethylene-responsive transcripts were identified in rose (Rosa hybrida) petals using transcriptome sequencing and microarray analysis. ...

Journal: :Journal of Experimental Botany 2009
Siddharth Kaushal Tripathi Amar Pal Singh Aniruddha P. Sane Pravendra Nath

Cysteine proteases play an important role in several developmental processes in plants, particularly those related to senescence and cell death. A cysteine protease gene, RbCP1, has been identified that encodes a putative protein of 357 amino acids and is expressed in the abscission zone (AZ) of petals in rose. The gene was responsive to ethylene in petals, petal abscission zones, leaves, and t...

Journal: :Plant physiology 2003
Maxim Golovkin Anireddy S N Reddy

U1 small nuclear ribonucleoprotein (snRNP)-70K (U1-70K), a U1 snRNP-specific protein, is involved in the early stages of spliceosome formation. In non-plant systems, it is involved in constitutive and alternative splicing. It has been shown that U1snRNP is dispensable for in vitro splicing of some animal pre-mRNAs, and inactivation of U1-70K in yeast (Saccharomyces cerevisiae) is not lethal. As...

2011
Taro Harada Yuka Torii Shigeto Morita Reiko Onodera Yoshinao Hara Ryusuke Yokoyama Kazuhiko Nishitani Shigeru Satoh

Growth of petal cells is a basis for expansion and morphogenesis (outward bending) of petals during opening of carnation flowers (Dianthus caryophyllus L.). Petal growth progressed through elongation in the early stage, expansion with outward bending in the middle stage, and expansion of the whole area in the late stage of flower opening. In the present study, four cDNAs encoding xyloglucan end...

1994
R. Newman

Introduction According to present theory, the nuclear processes in the sun give off vast quantities of neutrinos-Experiments confirm the production of these particles, but fail to detect the quantity predicted by theory. The most recent experiments have found a maximum of two thirds the expected number of neutrinos. The Sudbury Neutrino Observatory is being constructed to accurately determine t...

Journal: :American journal of botany 2002
Michelle McMahon Larry Hufford

Comparative developmental morphology was used to assess structural homology of flowers in Dalea, Marina, and Psorothamnus of the tribe Amorpheae (Fabaceae: Papilionoideae). Dalea, Marina, and some species of Psorothamnus have an unusual petal-stamen synorganization (stemonozone) in which free petals are inserted on a region that is continuous with fused stamen filaments. Developmental studies o...

Journal: :Plant physiology 1991
D E Collier W R Cummins

Changes in the oxygen uptake of petal slices by the cytochrome and alternative respiratory pathways were monitored during petal development in the arctic herb Saxifraga cernua. As the petals developed, rates of total respiration increased to a maximum rate during petal unfolding (day 4.5), and thereafter declined. Respiration in petals of all ages was at least partially resistant to cyanide, in...

2009
Matthew B. Toomey Kevin J. McGraw

1. Studies of visual ecology generally focus on the tuning of the eye to the spectral environment. However, the environment may also shape vision if the availability of nutrients or other extrinsic stressors impact eye structure or function. 2. Carotenoids are diet-derived pigments that accumulate in the retinas of birds, where they provide photoprotection and tune colour vision. In domesticate...

Journal: :iranian journal of pharmaceutical sciences 0
jinous asgarpanah department of pharmacognosy, pharmaceutical sciences branch, islamic azad university (iau), tehran, iran. elahe darabi-mahboub department of pharmacognosy, pharmaceutical sciences branch, islamic azad university (iau), tehran, iran. arash mahboubi department of pharmaceutics, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran. rezvan mehrab department of pharmaceutics, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran. mojdeh hakemivala department of microbiology, faculty of medicine, shahid beheshti university of medical sciences, tehran, iran.

growing interest to use natural preservatives and spices with antimicrobial effects and large amounts of floral bio-residues (92.6 g per 100 g) generated and wasted in the production of saffron spice guided this study  to evaluate  the opportunity to expand the uses of c. sativus flowers (petals and stamens), beyond the spice (dried stigmas). the antibacterial potential of total extracts and di...

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