LEADER 05137nam 2200637 a 450 001 996205986403316 005 20230721031149.0 010 $a1-281-32028-5 010 $a9786611320287 010 $a0-470-76408-2 010 $a0-470-98885-1 010 $a0-470-99426-6 035 $a(CKB)1000000000411178 035 $a(EBL)350933 035 $a(OCoLC)808684181 035 $a(SSID)ssj0000244095 035 $a(PQKBManifestationID)11190676 035 $a(PQKBTitleCode)TC0000244095 035 $a(PQKBWorkID)10168844 035 $a(PQKB)10760840 035 $a(MiAaPQ)EBC350933 035 $a(EXLCZ)991000000000411178 100 $a20060804d2007 uy 0 101 0 $aeng 135 $aur|n|---||||| 181 $ctxt 182 $cc 183 $acr 200 00$aSenescence processes in plants$b[electronic resource] /$fedited by Susheng Gan 210 $aOxford ;$aAmes, Iowa $cBlackwell Pub.$d2007 215 $a1 online resource (354 p.) 225 1 $aAnnual plant reviews ;$vv. 26 300 $aDescription based upon print version of record. 311 $a1-4051-3984-6 320 $aIncludes bibliographical references and index. 327 $aSenescence Processes in Plants; Contents; Contributors; Preface; 1 Mitotic senescence in plants; 1.1 Introduction; 1.2 Terminology and types of senescence; 1.3 Plants exhibit mitotic senescence, postmitotic senescence and cell quiescence; 1.4 Mitotic senescence: arrest of SAM; 1.4.1 Initiation of SAM; 1.4.2 Maintenance of SAM; 1.4.3 Arrest of SAM: a mitotic senescence in nature; 1.4.3.1 Physiological regulation; 1.4.3.2 Genetic regulation; 1.5 Role of telomere and telomerase in mitotic senescence; 1.5.1 Telomere; 1.5.2 Telomerase 327 $a1.5.3 Telomere shortening and replicative senescence in animals1.5.4 Telomere biology in plants; 1.6 Closing remarks; Acknowledgment; References; 2 Chlorophyll catabolism and leaf coloration; 2.1 Introduction; 2.2 Chlorophyll catabolites; 2.2.1 Green catabolites; 2.2.1.1 Chlorins; 2.2.1.2 Phytol; 2.2.2 Catabolites with a tetrapyrrolic structure; 2.2.2.1 Red chlorophyll catabolites; 2.2.2.2 Fluorescent chlorophyll catabolites; 2.2.2.3 Nonfluorescent chlorophyll catabolites; 2.2.2.4 Are NCCs degraded further?; 2.3 The chlorophyll degradation pathway; 2.3.1 Chlorophyll cycle 327 $a2.3.2 Reactions on green pigments2.3.2.1 Chlorophyllase; 2.3.2.2 Mg dechelation; 2.3.3 Loss of green color; 2.3.3.1 Pheophorbide a oxygenase; 2.3.3.2 Red chlorophyll catabolite reductase; 2.3.4 Reactions on pFCC; 2.3.4.1 Hydroxylation; 2.3.4.2 Glucosylation; 2.3.4.3 Malonylation; 2.3.4.4 Demethylation; 2.3.4.5 Tautomerization; 2.4 Chlorophyll catabolic mutants; 2.5 Significance of chlorophyll breakdown; 2.5.1 Topology of chlorophyll breakdown; 2.5.2 Chl breakdown and cell death; 2.5.3 Chl breakdown and nitrogen economy; 2.6 The pigments of senescing leaves 327 $a2.7 The function of anthocyanins in leaf senescence2.7.1 Physiological explanations; 2.7.2 Ecological explanations; 2.7.3 Reconciling these explanations; 2.8 Conclusions and perspectives; References; 3 Membrane dynamics and regulation of subcellular changes during senescence; 3.1 Introduction; 3.2 Loss of membrane structural integrity during senescence; 3.2.1 Senescence-associated changes in the molecular organization of membrane lipid bilayers; 3.2.2 Role of lipases; 3.2.2.1 Initial fate of de-esterified fatty acids in senescing membranes 327 $a3.2.2.2 Autocatalytic nature of membrane fatty acid de-esterification3.2.3 Role of galactolipases; 3.3 Role of proteolysis in membrane senescence; 3.4 Dismantling of membranes in senescing tissue; 3.4.1 Plastoglobuli; 3.4.2 Cytosolic lipid-protein particles; 3.4.2.1 Sites of cytosolic lipid-protein particle ontogeny; 3.5 Role of autophagy; 3.6 Metabolism of membrane fatty acids in senescing tissues; 3.6.1 Galactolipid fatty acids; 3.6.2 Fate of thylakoid fatty acids during stress-induced senescence; 3.7 Translational regulation of senescence; References; 4 Oxidative stress and leaf senescence 327 $a4.1 Introduction 330 $aThe scientific and economic significance of plant senescence means that much effort has been made to understand the processes involved and to devise means of manipulating them agriculturally. During the past few years there has been considerable progress in this regard, especially in the molecular, genetic and genomic aspects. Senescence has a tremendous impact on agriculture. For example, leaf senescence limits crop yield and biomass production, and contributes substantially to postharvest loss in vegetable and ornamental crops during transportation, storage and on shelves. In addition, prote 410 0$aAnnual plant reviews ;$vv. 26. 606 $aPlants$xAging 615 0$aPlants$xAging. 676 $a571.8782 676 $a580.5 686 $a42.42$2bcl 701 $aGan$b Susheng$0964147 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a996205986403316 996 $aSenescence processes in plants$92186523 997 $aUNISA