From the Outside to the Inside: New Insights on the Main Factors That Guide Seed Dormancy and Germination.

Published on Dec 31, 2020in Genes3.759
· DOI :10.3390/GENES12010052
Chiara Longo3
Estimated H-index: 3
,
Soyanni Holness1
Estimated H-index: 1
+ 4 AuthorsPaola Vittorioso13
Estimated H-index: 13
Sources
Abstract
The transition from a dormant to a germinating seed represents a crucial developmental switch in the life cycle of a plant. Subsequent transition from a germinating seed to an autotrophic organism also requires a robust and multi-layered control. Seed germination and seedling growth are multistep processes, involving both internal and external signals, which lead to a fine-tuning control network. In recent years, numerous studies have contributed to elucidate the molecular mechanisms underlying these processes: from light signaling and light-hormone crosstalk to the effects of abiotic stresses, from epigenetic regulation to translational control. However, there are still many open questions and molecular elements to be identified. This review will focus on the different aspects of the molecular control of seed dormancy and germination, pointing out new molecular elements and how these integrate in the signaling pathways already known.
References135
Newest
#1Premachandran Yadukrishnan (IISc: Indian Institute of Science)H-Index: 6
#2Puthan Valappil Rahul (Indian Institute of Science Education and Research, Bhopal)H-Index: 3
Last. Sourav Datta (IISc: Indian Institute of Science)H-Index: 12
view all 3 authors...
In contradiction with what has been reported before, the light signaling factor HY5 negatively regulates ABA-mediated inhibition of post-germination seedling growth by acting downstream to COP1.
4 CitationsSource
#1Zhijuan Wang (HAU: Huazhong Agricultural University)H-Index: 8
#2Ziyin Ren (HAU: Huazhong Agricultural University)H-Index: 3
Last. Jian-Kang Zhu (Purdue University)H-Index: 167
view all 16 authors...
Abstract Seed germination and seedling establishment are important for the reproductive success of plants, but seeds and seedlings typically encounter constantly changing environmental conditions. By inhibiting seed germination and postgerminative growth through the PYR1/PYL/RCAR ABA receptors and PP2C co-receptors, the phytohormone abscisic acid (ABA) prevents premature germination and seedling growth under unfavorable conditions. However, little is known about how the ABA-mediated inhibition o...
8 CitationsSource
#1Liwen Yang (CAS: Chinese Academy of Sciences)H-Index: 1
#2Zhimin Jiang (CAS: Chinese Academy of Sciences)H-Index: 9
Last. Rongcheng Lin (CAS: Chinese Academy of Sciences)H-Index: 26
view all 4 authors...
The phytochrome B (phyB) photoreceptor plays a major role that inputs light signals to regulate seed dormancy and germination. PHYTOCHROME-INTERACTING FACTOR1 (PIF1) is a key transcription factor repressing phyB-mediated seed germination, while REVEILLE1 (RVE1) transcription factor functions as a curial regulator in controlling both seed dormancy and germination. However, the relationship between the PIF1- and RVE1-modulated signaling pathways remains mostly unknown. Here, we find that PIF1 phys...
11 CitationsSource
#1Liwen Yang (CAS: Chinese Academy of Sciences)H-Index: 3
#2Shuangrong Liu (CAS: Chinese Academy of Sciences)H-Index: 3
Last. Rongcheng Lin (CAS: Chinese Academy of Sciences)H-Index: 26
view all 3 authors...
Seed dormancy is an adaptive trait in plants. Breaking seed dormancy determines the timing of germination and is, thereby essential for ensuring plant survival and agricultural production. Seed dormancy and the subsequent germination are controlled by both internal cues (mainly hormones) and environmental signals. In the past few years, the roles of plant hormones in regulating seed dormancy and germination have been uncovered. However, we are only beginning to understand how light signaling pat...
17 CitationsSource
#1Bowen Yan (Shenyang Agricultural University)H-Index: 1
#2Yanpeng Lv (Shenyang Agricultural University)H-Index: 1
Last. Xiaoxue Wang (Shenyang Agricultural University)H-Index: 1
view all 4 authors...
Polycomb repressive complex 1 (PRC1) and PRC2 are the major complexes composed of polycomb-group (PcG) proteins in plants. PRC2 catalyzes trimethylation of lysine 27 on histone 3 to silence target genes. Like Heterochromatin Protein 1/Terminal Flower 2 (LHP1/TFL2) recognizes and binds to H3K27me3 generated by PRC2 activities and enrolls PRC1 complex to further silence the chromatin through depositing monoubiquitylation of lysine 119 on H2A. Mutations in PcG genes display diverse developmental de...
4 CitationsSource
#1Naichong Chen (OSU: Oklahoma State University–Stillwater)H-Index: 5
#2Hui Wang (OSU: Oklahoma State University–Stillwater)H-Index: 9
Last. Randy D. Allen (OSU: Oklahoma State University–Stillwater)H-Index: 42
view all 6 authors...
DELAY OF GERMINATION1 (DOG1) is a primary regulator of seed dormancy. Accumulation of DOG1 in seeds lead to deep dormancy and delayed germination in Arabidopsis. B3 domain-containing transcriptional repressors HSI2/VAL1 and HSL1/VAL2 silence seed dormancy and enable the subsequent germination and seedling growth. However, the roles of HSI2 and HSL1 in regulation of DOG1 expression and seed dormancy remain elusive. Seed dormancy was analyzed by measurement of maximum germination percentage of fre...
11 CitationsSource
#1Yue Wang (Inner Mongolia University)H-Index: 1
#2Pengfei Diao (Inner Mongolia University)H-Index: 2
Last. Hada Wuriyanghan (Inner Mongolia University)H-Index: 10
view all 10 authors...
Alfalfa (Medicago sativa L.) is an important forage, and salinity is a major stress factor on its yield. In this study, we show that osmotic stress retards alfalfa seedling growth, while ionic/oxidative stress reduces its seed germination. Ethylene treatment can recover the germination rate of alfalfa seeds under salt stress, while ethylene inhibitor silver thiosulfate exacerbates salt effects. ETH reduces the accumulation of MDA and H2O2 and increases POD activity. ETH and ACC improve the salt ...
10 CitationsSource
#1Gerardo Carrera-Castaño (UPM: Technical University of Madrid)H-Index: 2
#2Julián Calleja-Cabrera (UPM: Technical University of Madrid)H-Index: 3
Last. Luis Oñate-Sánchez (UPM: Technical University of Madrid)H-Index: 18
view all 5 authors...
The ability of a seed to germinate and establish a plant at the right time of year is of vital importance from an ecological and economical point of view. Due to the fragility of these early growth stages, their swiftness and robustness will impact later developmental stages and crop yield. These traits are modulated by a continuous interaction between the genetic makeup of the plant and the environment from seed production to germination stages. In this review, we have summarized the establishe...
16 CitationsSource
#1Xiaoxia Li (CAS: Chinese Academy of Sciences)H-Index: 10
#2Junting JiaH-Index: 7
Last. Gongshe Liu (CAS: Chinese Academy of Sciences)H-Index: 19
view all 8 authors...
Sheepgrass (Leymus chinensis (Trin.) Tzvel) is a perennial forage grass that can survive extreme freezing winters (− 47.5 °C) in China. In this study, we isolated an unknown function MYB transcription factor gene, LcMYB4, from sheepgrass. However, the function of LcMYB4 and its homologous genes has not been studied in other plants. The expression of the LcMYB4 gene was upregulated in response to cold induction, and the LcMYB4 fusion protein was localized in the nucleus, with transcriptional acti...
4 CitationsSource
#1Pratibha Ravindran (NUS: National University of Singapore)H-Index: 6
#2Shi Yin Yong (NUS: National University of Singapore)H-Index: 1
Last. Prakash P. Kumar (NUS: National University of Singapore)H-Index: 35
view all 4 authors...
KEY MESSAGE: LRRop-1, induced by DOF6 transcription factor, negatively regulates abiotic stress responses during Arabidopsis seed germination. The lrrop-1 mutant has reduced ABA signaling, which is part of the underlying stress-remediation mechanism. The large family of leucine-rich repeat (LRR) proteins plays a role in plant immune responses. Most LRR proteins have multiple functional domains, but a subfamily is known to possess only the LRR domain. The roles of these LRR-only proteins in Arabi...
2 CitationsSource
Cited By2
Newest
#1Liv Soares Severino (Empresa Brasileira de Pesquisa Agropecuária)H-Index: 18
This review proposes that plants make smart decision and encourages scientists to formulate and test hypotheses about plant's decisions as an option to investigate complex phenomena that are hardly explained through the predominant mechanistic approach. Three physiological processes (seed germination and seedling emergence, abortion of reproductive structures, and regulation of photosynthesis) are discussed to illustrate the plant's ability to make decisions from three different perspectives. It...
Source
#1Valentina Lodde (University of Milan)H-Index: 24
#2Piero MorandiniH-Index: 23
Last. Ignacio Ezquer (University of Milan)H-Index: 15
view all 5 authors...
This review explores the role of reactive oxygen species (ROS)/Ca2+ in communication within reproductive structures in plants and animals. Many concepts have been described during the last years regarding how biosynthesis, generation products, antioxidant systems, and signal transduction involve ROS signaling, as well as its possible link with developmental processes and response to biotic and abiotic stresses. In this review, we first addressed classic key concepts in ROS and Ca2+ signaling in ...
2 CitationsSource