Senescence-Associated Programmed Cell Death

Rogers, Hilary J.

doi:10.1007/978-3-319-21033-9_9

Cited by 10 publications

(9 citation statements)

References 154 publications

(182 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previously, it was reported that both genes of the ABA signaling pathway and ABA content were upregulated in later stages of flower development in Lonicera japonica [67]. In the later stage of flower development, ABA acts as a positive regulator for the senescence [68]. The increase in ABA concentration in the later stage of loquat flower development may be related to the involvement of ABA in petal senescence.…”

Section: Expression Analysis Of Key Differentially Expressed Genes (Dmentioning

confidence: 93%

An Integrative Analysis of Transcriptome, Proteome and Hormones Reveals Key Differentially Expressed Genes and Metabolic Pathways Involved in Flower Development in Loquat

Jing

Chen

et al. 2020

IJMS

View full text Add to dashboard Cite

Flower development is a vital developmental process in the life cycle of woody perennials, especially fruit trees. Herein, we used transcriptomic, proteomic, and hormone analyses to investigate the key candidate genes/proteins in loquat (Eriobotrya japonica) at the stages of flower bud differentiation (FBD), floral bud elongation (FBE), and floral anthesis (FA). Comparative transcriptome analysis showed that differentially expressed genes (DEGs) were mainly enriched in metabolic pathways of hormone signal transduction and starch and sucrose metabolism. Importantly, the DEGs of hormone signal transduction were significantly involved in the signaling pathways of auxin, gibberellins (GAs), cytokinin, ethylene, abscisic acid (ABA), jasmonic acid, and salicylic acid. Meanwhile, key floral integrator genes FLOWERING LOCUS T (FT) and SUPPRESSOR OF OVEREXPRESSION OF CONSTANS1 (SOC1) and floral meristem identity genes SQUAMOSA PROMOTER BINDING LIKE (SPL), LEAFY (LFY), APETALA1 (AP1), and AP2 were significantly upregulated at the FBD stage. However, key floral organ identity genes AGAMOUS (AG), AP3, and PISTILLATA (PI) were significantly upregulated at the stages of FBE and FA. Furthermore, transcription factors (TFs) such as bHLH (basic helix-loop-helix), NAC (no apical meristem (NAM), Arabidopsis transcription activation factor (ATAF1/2) and cup-shaped cotyledon (CUC2)), MYB_related (myeloblastosis_related), ERF (ethylene response factor), and C2H2 (cysteine-2/histidine-2) were also significantly differentially expressed. Accordingly, comparative proteomic analysis of differentially accumulated proteins (DAPs) and combined enrichment of DEGs and DAPs showed that starch and sucrose metabolism was also significantly enriched. Concentrations of GA3 and zeatin were high before the FA stage, but ABA concentration remained high at the FA stage. Our results provide abundant sequence resources for clarifying the underlying mechanisms of the flower development in loquat.

show abstract

Section: Expression Analysis Of Key Differentially Expressed Genes (Dmentioning

confidence: 93%

An Integrative Analysis of Transcriptome, Proteome and Hormones Reveals Key Differentially Expressed Genes and Metabolic Pathways Involved in Flower Development in Loquat

Jing

Chen

et al. 2020

IJMS

View full text Add to dashboard Cite

show abstract

“…This consequently leads to the release of lytic enzymes and degradation of the nucleus and mitochondria. Usually, the rupture of the tonoplast is the final step of senescence ending in PCD ( Rogers, 2015 ).…”

Section: Morphological Changes Of Barley Leaves Senescing In Darknessmentioning

confidence: 99%

“…It also eliminates misleading factors that coincide with developmental senescence, such as bolting or flowering (Gregersen et al, 2008). Widely used experimental setups to study dark-induced senescence in barley are (i) detached leaf in darkness (e.g., Becker and Apel, 1993;Legocka and Zajchert, 1999;Chrost and Krupinska, 2000;Rosiak-Figielek and Jackowski, 2000;Chrost et al, 2004;Żelisko and Jackowski, 2004;Conrad et al, 2007;Sobieszczuk-Nowicka et al, 2009, 2015Kucharewicz et al, 2017;Janečková et al, 2019) (ii) whole plant in darkness (e.g., Kleber-Janke and Krupinska, 1997;Krause et al, 1998;Roulin et al, 2002;Simova-Stoilova et al, 2002;Arnao and Hernández-Ruiz, 2009;Jajić et al, 2014;Avila-Ospina et al, 2015;Zmienko et al, 2015;Sobieszczuk-Nowicka et al, 2016, and (iii) individually darkened attached leaf, whilst the rest of the plant remained in a normal photoperiod condition (e.g., Rolny et al, 2011;Shi et al, 2012;Christiansen et al, 2016). As the course of the senescence process is related to plant species, plant developmental stage, and plant environmental conditions these treatments cannot be considered the same.…”

Section: Introductionmentioning

confidence: 99%

Dark-Induced Barley Leaf Senescence – A Crop System for Studying Senescence and Autophagy Mechanisms

2021

View full text Add to dashboard Cite

This review synthesizes knowledge on dark-induced barley, attached, leaf senescence (DILS) as a model and discusses the possibility of using this crop system for studying senescence and autophagy mechanisms. It addresses the recent progress made in our understanding of DILS. The following aspects are discussed: the importance of chloroplasts as early targets of DILS, the role of Rubisco as the largest repository of recoverable nitrogen in leaves senescing in darkness, morphological changes of these leaves other than those described for chloroplasts and metabolic modifications associated with them, DILS versus developmental leaf senescence transcriptomic differences, and finally the observation that in DILS autophagy participates in the circulation of cell components and acts as a quality control mechanism during senescence. Despite the progression of macroautophagy, the symptoms of degradation can be reversed. In the review, the question also arises how plant cells regulate stress-induced senescence via autophagy and how the function of autophagy switches between cell survival and cell death.

show abstract

“…NAC and WRKY TFs have been closely associated with senescence in several tissues such as Arabidopsis leaves, petals and siliques, and they interact with many regulators including plant hormones and ROS [17, 64]. Plant hormones like JA, SA, and ABA act as positive regulators of plant senescence [17, 65]. ROS have been proposed as key inducers of developmental PCD or senescence [40].…”

Section: Discussionmentioning

confidence: 99%

Transcriptional regulation of Lonicera japonica Thunb. during flower development as revealed by comprehensive analysis of transcription factors

et al. 2019

View full text Add to dashboard Cite

Background Lonicera japonica Thunb. flower has been used for the treatment of various diseases for a long time and attracted many studies on its potential effects. Transcription factors (TFs) regulate extensive biological processes during plant development. As the restricted reports of L. japonica on TFs, our work was carried out to better understand the TFs’ regulatory roles under different developmental stages in L. japonica . Results In this study, 1316 TFs belonging to 52 families were identified from the transcriptomic data, and corresponding expression profiles during the L. japonica flower development were comprehensively analyzed. 917 (69.68%) TFs were differentially expressed. TFs in bHLH, ERF, MYB, bZIP, and NAC families exhibited obviously altered expression during flower growth. Based on the analysis of differentially expressed TFs (DETFs), TFs in MYB, WRKY, NAC and LSD families that involved in phenylpropanoids biosynthesis, senescence processes and antioxidant activity were detected. The expression of MYB114 exhibited a positive correlation with the contents of luteoloside; Positive correlation was observed among the expression of MYC12 , chalcone synthase (CHS) and flavonol synthase (FLS) , while negative correlation was observed between the expression of MYB44 and the synthases; The expression of LSD1 was highly correlated with the expression of SOD and the total antioxidant capacity, while the expression of LOL1 and LOL2 exhibited a negative correlation with them; Many TFs in NAC and WRKY families may be potentially involved in the senescence process regulated by hormones and reactive oxygen species (ROS). The expression of NAC19 , NAC29 , and NAC53 exhibited a positive correlation with the contents of ABA and H 2 O 2 , while the expression of WRKY53 , WRKY54 , and WRKY70 exhibited a negative correlation with the contents of JA, SA and ABA. Conclusions Our study provided a comprehensive characterization of the expression profiles of TFs during the developmental stages of L. japonica . In addition, we detected the key TFs that may play significant roles in controlling active components biosynthesis, antioxidant activity and flower senescence in L. japonica , thereby providing valuable insights into the molecular networks underlying L. japonica flower development. Electronic supplemen...

show abstract

Senescence-Associated Programmed Cell Death

Cited by 10 publications

References 154 publications

An Integrative Analysis of Transcriptome, Proteome and Hormones Reveals Key Differentially Expressed Genes and Metabolic Pathways Involved in Flower Development in Loquat

An Integrative Analysis of Transcriptome, Proteome and Hormones Reveals Key Differentially Expressed Genes and Metabolic Pathways Involved in Flower Development in Loquat

Dark-Induced Barley Leaf Senescence – A Crop System for Studying Senescence and Autophagy Mechanisms

Transcriptional regulation of Lonicera japonica Thunb. during flower development as revealed by comprehensive analysis of transcription factors

Contact Info

Product

Resources

About