By Susheng Gan
The clinical and financial importance of plant senescence signifies that a lot attempt has been made to appreciate the techniques concerned and to plot technique of manipulating them agriculturally. in past times few years there was massive development during this regard, specifically within the molecular, genetic and genomic points. Senescence has an enormous impression on agriculture. for instance, leaf senescence limits crop yield and biomass construction, and contributes considerably to postharvest loss in vegetable and decorative vegetation in the course of transportation, garage and on cabinets. moreover, proteins, antioxidants and different dietary compounds are degraded in the course of senescence. Senescing tissues additionally turn into extra at risk of pathogen an infection, and a few of the pathogens may well produce pollution, rendering nutrition harmful. Mitotic senescence can also ensure sizes of leaves, culmination and full vegetation.
This quantity summarizes fresh progresses within the body structure, biochemistry, mobilephone biology, molecular biology, genomics, proteomics, and biotechnology of plant senescence. starting with a bankruptcy on senescence-related terminology and our present wisdom of mitotic senescence in vegetation (a much less well-studied area), the booklet specializes in post-mitotic senescence, and contains chapters addressing the senescence of leaves, vegetation and culmination. Later chapters research the advance of assorted new biotechnologies for manipulating the senescence procedures of fruit and leaves, a few of that are imminent commercialization. The publication is directed at researchers and execs in plant molecular genetics, body structure and biochemistry.Content:
Chapter 1 Mitotic Senescence in vegetation (pages 1–11): Susheng Gan
Chapter 2 Chlorophyll Catabolism and Leaf shade (pages 12–38): Stefan Hortensteiner and David W. Lee
Chapter three Membrane Dynamics and rules of Subcellular alterations in the course of Senescence (pages 39–68): Marianne Hopkins, Linda McNamara, Catherine Taylor, Tzann?Wei Wang and John Thompson
Chapter four Oxidative rigidity and Leaf Senescence (pages 69–86): Ulrike Zentgraf
Chapter five Nutrient Remobilization in the course of Leaf Senescence (pages 87–107): Andreas M. Fischer
Chapter 6 Environmental rules of Leaf Senescence (pages 108–144): Amnon Lers
Chapter 7 Developmental and Hormonal keep an eye on of Leaf Senescence (pages 145–170): Jos H.M. Schippers, Hai?Chun Jing, Jacques Hille and Paul P. Dijkwel
Chapter eight The Genetic keep an eye on of Senescence published by means of Mapping Quantitative Trait Loci (pages 171–201): Helen Ougham, Ian Armstead, Catherine Howarth, Isaac Galyuon, Iain Donnison and Howard Thomas
Chapter nine Genomics and Proteomics of Leaf Senescence (pages 202–230): Marie?Jeanne Carp and Shimon Gepstein
Chapter 10 Molecular rules of Leaf Senescence (pages 231–255): Hyo Jung Kim, Pyung okay Lim and Hong Gil Nam
Chapter eleven Flower Senescence (pages 256–277): Michael S. Reid and Jen?Chih Chen
Chapter 12 Fruit Ripening and its Manipulation (pages 278–303): James J. Giovannoni
Chapter thirteen Genetic Manipulation of Leaf Senescence (pages 304–322): Yongfeng Guo and Susheng Gan
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Extra info for Annual Plant Reviews Volume 26: Senescence Processes in Plants
Putative reactions are indicated with a question mark. Pyrrole rings (A–D), methine bridges (α–δ) and relevant carbon atoms are labeled in chl. R 0 = CH 3 , chl a; R 0 = CHO, chl b. R 1 –R 3 in modiﬁed FCCs and NCCs indicate side-chain groups as follows: D, dihydroxyethyl; H, hydrogen; M, methyl; OG, O-glucosyl; OGM, O-glucosyl-malonyl; OH, hydroxyl; OM, O-malonyl; V, vinyl. Note that only in two cases have modiﬁed FCCs been structurally analyzed. 2. CHLOROPHYLL CATABOLISM AND LEAF COLORATION 15 ones may represent products of oxidative activities or artifacts of tissue extraction, not related to ‘natural’ chl breakdown during leaf senescence.
2005). In contrast, a (zinc-binding) metalloprotease acting toward Lhcb3 was identiﬁed (Zelisko and Jackowski, 2004) which, judged from its enzymatic properties, could be a member of the FtsH family. The activity was integrally associated with thylakoid membranes, but susceptibility of Lhcb3 for proteolytic attack required the removal of unknown protective factors in a senescence-dependent manner. 6 The pigments of senescing leaves Depending on the rate and timing of chl breakdown, and the dynamics of accessory pigments, leaves take on dramatically different coloration during senescence.
1998) Suzuki and Shioi (2002) Pruˇzinsk´a et al. (2003) W¨uthrich et al. (2000) Matile et al. (1992) Suzuki et al. (2002) Scheumann et al. (1998, 1999) Scheumann et al. (1998) Tsuchiya et al. 1 Chemical structures of chl and chl catabolites, and topographical model of chl breakdown. 1. Putative reactions are indicated with a question mark. Pyrrole rings (A–D), methine bridges (α–δ) and relevant carbon atoms are labeled in chl. R 0 = CH 3 , chl a; R 0 = CHO, chl b. R 1 –R 3 in modiﬁed FCCs and NCCs indicate side-chain groups as follows: D, dihydroxyethyl; H, hydrogen; M, methyl; OG, O-glucosyl; OGM, O-glucosyl-malonyl; OH, hydroxyl; OM, O-malonyl; V, vinyl.
Annual Plant Reviews Volume 26: Senescence Processes in Plants by Susheng Gan