The dynamic nature of bud dormancy in trees: environmental control and molecular mechanisms

Plant Cell & Environment, Год журнала: 2012, Номер 35(10), С. 1707 - 1728

Опубликована: Июнь 4, 2012

ABSTRACT In tree species native to temperate and boreal regions, the activity‐dormancy cycle is an important adaptive trait both for survival growth. We discuss recent research on mechanisms controlling overlapping developmental processes that define cycle, including cessation of apical growth, bud development, induction, maintenance release dormancy, burst. The involves extensive reconfiguration metabolism. Environmental control based perception photoperiodic temperature signals, reflecting adaptation prevailing climatic conditions. Several molecular actors growth have been identified, with CO/FT regulatory network circadian clock having coordinating roles in dormancy. Other candidate regulators set, dormancy burst such as dormancy‐associated MADS‐box factors, but their exact remain be discovered. Epigenetic also appear factor cycle. Despite evidence gibberellins negative cessation, ABA ethylene formation, understanding plant play still very fragmentary. Finally, some challenges further are discussed.

Язык: Английский

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Senescence, ageing and death of the whole plant

New Phytologist, Год журнала: 2012, Номер 197(3), С. 696 - 711

Опубликована: Ноя. 23, 2012

696 I. 697 II. III. 699 IV. 700 V. 703 VI. 704 VII. 707 708 References 708This review considers the relationship between lifespan of an individual plant and longevity its component cells, tissues organs. It begins by defining terms senescence, growth, development, turnover, ageing, death program. Genetic epigenetic mechanisms regulating phase change from juvenility to maturity influence directly capacity for responding senescence signals factors determining reproduction-related patterns deteriorative ageing death. Senescence is responsive communication sources sinks in which sugar signalling hormonal regulation play central roles. Monocarpy polycarpy represent contrasting outcomes balance determinacy apical meristems source-sink cross-talk. Even extremely long-lived perennials sustain a high degree meristem integrity. Factors associated with animals, such as somatic mutation, telomere attrition costs repair maintenance, do not seem be particularly significant lifespan, but autophagy-related regulatory networks integrated nutrient may have part play. Size important on physiological function fitness old trees. Self-control modular structure allows trees viability over prolonged lifespans. Different turnover structural modules can account range life histories longevities.

Язык: Английский

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In Posidonia oceanica cadmium induces changes in DNA methylation and chromatin patterning

Journal of Experimental Botany, Год журнала: 2011, Номер 63(2), С. 695 - 709

Опубликована: Ноя. 4, 2011

In mammals, cadmium is widely considered as a non-genotoxic carcinogen acting through methylation-dependent epigenetic mechanism. Here, the effects of Cd treatment on DNA methylation patten are examined together with its effect chromatin reconfiguration in Posidonia oceanica. level and pattern were analysed actively growing organs, under short- (6 h) long- (2 d or 4 d) term low (10 μM) high (50 doses Cd, Methylation-Sensitive Amplification Polymorphism technique an immunocytological approach, respectively. The expression one member CHROMOMETHYLASE (CMT) family, methyltransferase, was also assessed by qRT-PCR. Nuclear ultrastructure investigated transmission electron microscopy. induced hypermethylation, well up-regulation CMT, indicating that de novo did indeed occur. Moreover, dose led to progressive heterochromatinization interphase nuclei apoptotic figures observed after long-term treatment. data demonstrate perturbs status involvement specific methyltransferase. Such changes linked nuclear likely establish new balance expressed/repressed chromatin. Overall, show basis mechanism underlying toxicity plants.

Язык: Английский

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Dormancy in temperate fruit trees in a global warming context: A review

Scientia Horticulturae, Год журнала: 2011, Номер 130(2), С. 357 - 372

Опубликована: Авг. 13, 2011

Язык: Английский

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Photoperiod- and temperature-mediated control of growth cessation and dormancy in trees: a molecular perspective

Annals of Botany, Год журнала: 2017, Номер 120(3), С. 351 - 360

Опубликована: Апрель 28, 2017

How plants adapt their developmental patterns to regular seasonal changes is an important question in biology. The annual growth cycle perennial long-lived trees yet another example of how can changes. two main signals that rely on respond are photoperiod and temperature, these have critical roles the temporal regulation trees. This review presents latest findings provide insight into molecular mechanisms underlie photoperiodic temperature regulate results point a high level conservation signalling pathways mediate control flowering such as arabidopsis. Furthermore, data indicate symplastic communication may certain aspects growth. Although considerable phenology model poplar spruce has been obtained, future challenge extending studies other, non-model

Язык: Английский

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Partial Least Squares Regression for analyzing walnut phenology in California

Agricultural and Forest Meteorology, Год журнала: 2012, Номер 158-159, С. 43 - 52

Опубликована: Март 8, 2012

Язык: Английский

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The fulfilment of chilling requirements and the adaptation of apricot (Prunus armeniaca L.) in warm winter climates: An approach in Murcia (Spain) and the Western Cape (South Africa)

European Journal of Agronomy, Год журнала: 2011, Номер 37(1), С. 43 - 55

Опубликована: Ноя. 17, 2011

Язык: Английский

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Prunus genetics and applications after de novo genome sequencing: achievements and prospects

Horticulture Research, Год журнала: 2019, Номер 6(1)

Опубликована: Апрель 5, 2019

Prior to the availability of whole-genome sequences, our understanding structural and functional aspects Prunus tree genomes was limited mostly molecular genetic mapping important traits development EST resources. With public release peach genome others that followed, significant advances in knowledge underpinnings ensued. In this review, we highlight key achievements genetics breeding driven by these sequences. Within evolutionary contexts, summarize: (1) current status sequences; (2) preliminary ongoing work on sequence structure diversity genomes; (3) analyses evolution natural man-made selection; (4) provide insight into haploblocking as a means define genome-scale patterns can be leveraged for trait selection pedigree-based programs worldwide. Functionally, summarize recent leverages sequences identify characterize genes controlling 22 agronomically traits. These include phenology, fruit quality, allergens, disease resistance, architecture, self-incompatibility. Translationally, explore application sequence-based marker-assisted technologies other sequence-guided biotechnological approaches crop improvement. Finally, present publically available genomics data housed mainly Genome Database Rosaceae (GDR) its updated functionalities future bioinformatics-based inquiry.

Язык: Английский

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Champions of winter survival: cold acclimation and molecular regulation of cold hardiness in evergreen conifers

New Phytologist, Год журнала: 2020, Номер 229(2), С. 675 - 691

Опубликована: Сен. 1, 2020

Summary Evergreen conifers are champions of winter survival, based on their remarkable ability to acclimate cold and develop hardiness. Counterintuitively, autumn acclimation is triggered not only by exposure low temperature, but also a combination decreasing photoperiod changes in light quality. These environmental cues control network signaling pathways that coordinate hardiness overwintering conifers, leading cessation growth, bud dormancy, freezing tolerance energy metabolism. Advances genomic, transcriptomic metabolomic tools for have improved our understanding how trees sense respond temperature during the development hardiness, there remain considerable gaps deserving further research conifers. In first section this review, we focus physiological mechanisms used evergreen adjust metabolism seasonally protect tissues against stresses. second section, review perception regulate induction acclimation. Finally, explore evolutionary context evaluate challenges imposed them changing climate discuss emerging areas field.

Язык: Английский

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Epigenetic regulation of bud dormancy events in perennial plants

Frontiers in Plant Science, Год журнала: 2014, Номер 5

Опубликована: Июнь 3, 2014

Release of bud dormancy in perennial plants resembles vernalization Arabidopsis thaliana and cereals. In both cases a certain period chilling is required for accomplishing the reproductive phase, several transcription factors with MADS-box domain perform central regulatory role these processes. The expression DORMANCY ASSOCIATED (DAM)-related genes has been found to be up-regulated dormant buds numerous plant species such as poplar, raspberry, leafy spurge, blackcurrant, Japanese apricot peach. Moreover, functional evidence suggests involvement DAM regulation seasonal Recent findings highlight presence genome-wide epigenetic modifications related events, more specifically DAM-related similar way FLOWERING LOCUS C (FLC), key integrator effectors on flowering initiation Arabidopsis. We revise most relevant molecular genomic contributions field dormancy, discuss increasing chromatin cycles plants.

Язык: Английский

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