By E. Tapio Palva, Pekka Heino (auth.), Paul H. Li, Tony H. H. Chen (eds.)
This quantity is compiled in line with the complaints of the fifth overseas Plant chilly Hardiness Seminar, which was once held at Oregon kingdom collage, Corvallis, Oregon, united states, August five to eight, 1996. contributors representing sixteen international locations and 22 U. S. states attended the seminar. Researchers got here from significant laboratories world wide concerning plant chilly hardiness learn. the data compiled during this quantity represents the state-of the-art examine and our figuring out of plant chilly hardiness by way of molecular biol ogy, biochemistry, and body structure. The 1996 overseas Plant chilly Hardiness Seminar used to be the 5th of the sequence; it was once first held in 1977 on the college of Minnesota, St. Paul, MN, and because then has met each five years. the final objective of this seminar sequence is to foster the alternate of rules and learn findings one of the assorted teams of scientists learning freezing and chilling stresses from a wide selection of views. this can be the single overseas convention concentration ing its courses solely on low temperature pressure in crops. in line with the tradi tion, the 5th convention interested by freezing and chilling rigidity of crops and lined a number of features of plant chilly hardiness, together with molecular genetics, biochemistry, physi ology, and agricultural functions. All individuals to this quantity are eminent researchers who've had major contributions to the information of plant chilly hardiness.
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Additional info for Plant Cold Hardiness: Molecular Biology, Biochemistry, and Physiology
A basic question raised is how do plants sense low temperature and alter gene expression? Are the sensing and regulatory mechanisms the same in both chilling tolerant and chilling sensitive plants? Also, towards the practical end of crop improvement, can we manipulate these sensing and regulatory systems to increase the chilling and freezing tolerance of agronomically important plants? These and related questions are now being addressed in a number of laboratories. Here, we summarize some of the findings that we have made on cold-regulated gene expression in Arabidopsis thaliana, a chilling tolerant plant that cold acclimates.
Plant Mol BioI 30: 679--684 Jofuku KD, den Boer BGW, Van Montagu MV, Okamuro JK (1994) Control of Arabidopsis flower and seed development by the homeotic gene APETALA2. The Plant Cell 6: 1211-1225 Klucher KM, Chow H, Reiser L, Fischer RL (1996) The AINTEGUMENTA gene of Arabidopsis required for ovule and female gametophyte development is related to the floral homeotic gene APETALA2. The Plant Cell 8: 137-153 Knight H, Trewavas AJ, Knight MR (1996) Cold calcium signaling in Arabidopsis involves two cellular pools and a change in calcium signaling after acclimation.
In Arabidopsis, dark-grown seedlings have a long hypocotyls, apical hooks, and small unopened etiolated cotylodons. In contrast, light-growing seedlings have short hypocotyls, no apical hooks, and opened, enlarged, green cotyledons. Physiological, biochemical, molecular, and especially genetic studies have revealed that plants use several distinct light receptors such as phytochrome A, phytochrome B, cryptochromes, to senses the changes in light quantity and quality to initiate signals leading to skoto- or photo-morphogenesis.