منابع مشابه
Dependency of branch diameter growth in young Acer trees on light availability and shoot elongation.
Many biomechanical and theoretical studies have been based on the pipe-model theory, according to which a tree is regarded as an assemblage of pipes, each having the same amount of leaf area or leaf mass. However, the physiological mechanisms underlying the theory have not been extensively examined, particularly at the branch level. We analyzed how branches and trunks thickened in nine young Ac...
متن کاملFood Reserves in Mountain Longleaf Pine Roots during Shoot Elongation
Survival and growth of longleaf pine seedlings depends upon a well-developed root system. Soil moisture is also critical for the seedling to emerge from the grass-stage. When longleaf pine seedlings emerge from the grass stage, they grow rapidly in height and diameter. Branches are often few in number and, if present, may have low photosynthesis rates. This growth pattern is seen on all longlea...
متن کاملKinetic Modeling of Transcription Elongation
Transcription elongation is the process by which RNA polymerase (RNAP) moves along template DNA and synthesizes a complementary RNA. During elongation, RNAP carries out a highly processive and directional net motion, even in the presence of a large external load. From an energetics point of view, RNAP is a molecular motor capable of converting chemical energy derived from NTP hydrolysis into me...
متن کاملRepression of shoot growth, a bZIP transcriptional activator, regulates cell elongation by controlling the level of gibberellins.
Cell expansion, a developmental process regulated by both endogenous programs and environmental stimuli, is critically important for plant growth. Here, we report the isolation and characterization of RSG (for repression of shoot growth), a transcriptional activator with a basic leucine zipper (bZIP) domain. To examine the role of RSG in plant development, we generated transgenic tobacco plants...
متن کاملZea shoot development in response to red light interruption of the dark-growth period. I. Inhibition of first internode elongation.
Brief, low energy (approximately 400 Kerg cm(-2)) red light interruption of the early dark-growth period of Zea mays L. cv F-M Cross induced inhibition of first internode elongation which was maximal whenever light interruption occurred from 2.5 to 4 days of seedling age. Two-thirds of the maximal inhibition occurred in the tissues constituting the region 0 to 2 mm below the coleoptilar node at...
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ژورنال
عنوان ژورنال: Japan Agricultural Research Quarterly: JARQ
سال: 2008
ISSN: 0021-3551,2185-8896
DOI: 10.6090/jarq.42.91