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International Journal of Molecular... Apr 2022Plants have remarkable plasticity due to their vast genetic potential which interacts with many external factors and developmental signals to govern development and...
Plants have remarkable plasticity due to their vast genetic potential which interacts with many external factors and developmental signals to govern development and adaptation to changing environments [...].
Topics: Acclimatization; Adaptation, Physiological; Plant Development; Plants; Systems Biology
PubMed: 35456977
DOI: 10.3390/ijms23084159 -
Trends in Plant Science Apr 2017Plants downregulate their defences against insect herbivores upon impending competition for light. This has long been considered a resource trade-off, but recent... (Review)
Review
Plants downregulate their defences against insect herbivores upon impending competition for light. This has long been considered a resource trade-off, but recent advances in plant physiology and ecology suggest this mechanism is more complex. Here we propose that to understand why plants regulate and balance growth and defence, the complex dynamics in plant-plant competition and plant-herbivore interactions needs to be considered. Induced growth-defence responses affect plant competition and herbivore colonisation in space and time, which has consequences for the adaptive value of these responses. Assessing these complex interactions strongly benefits from advanced modelling tools that can model multitrophic interactions in space and time. Such an exercise will allow a critical re-evaluation why and how plants integrate defence and competition for light.
Topics: Animals; Herbivory; Host-Parasite Interactions; Plant Development; Plant Physiological Phenomena; Plants
PubMed: 28089490
DOI: 10.1016/j.tplants.2016.12.006 -
Advances in Space Research : the... 1981Gravity may influence different aspects of plant activity. The present report deals with two questions: gravity as an ecological factor determining spatial orientation... (Comparative Study)
Comparative Study Review
Gravity may influence different aspects of plant activity. The present report deals with two questions: gravity as an ecological factor determining spatial orientation of plant growth; and second, a possible requirement for gravity in the process of normal growth, morphogenesis and generative development of plants.
Topics: Arabidopsis; Germination; Gravitation; Lactuca; Pisum sativum; Plant Development; Rotation; Seeds; Space Flight; Weightlessness
PubMed: 11541699
DOI: 10.1016/0273-1177(81)90251-9 -
Plant Communications Nov 2020It has long been recognized that natural selection during the haploid gametophytic phase of the plant life cycle may have widespread importance for rates of evolution... (Review)
Review
It has long been recognized that natural selection during the haploid gametophytic phase of the plant life cycle may have widespread importance for rates of evolution and the maintenance of genetic variation. Recent theoretical advances have further highlighted the significance of gametophytic selection for diverse evolutionary processes. Genomic approaches offer exciting opportunities to address key questions about the extent and effects of gametophytic selection on plant evolution and adaptation. Here, we review the progress and prospects for integrating functional and evolutionary genomics to test theoretical predictions, and to examine the importance of gametophytic selection on genetic diversity and rates of evolution. There is growing evidence that selection during the gametophyte phase of the plant life cycle has important effects on both gene and genome evolution and is likely to have important pleiotropic effects on the sporophyte. We discuss the opportunities to integrate comparative population genomics, genome-wide association studies, and experimental approaches to further distinguish how differential selection in the two phases of the plant life cycle contributes to genetic diversity and adaptive evolution.
Topics: Biological Evolution; Genome-Wide Association Study; Genomics; Germ Cells, Plant; Plant Development; Plants; Selection, Genetic
PubMed: 33367268
DOI: 10.1016/j.xplc.2020.100115 -
Developmental Biology Oct 2018Multicellular organisms show the ability to replace damage cells, tissues and even whole organs through regeneration mechanisms. Plants show a remarkable regenerative... (Review)
Review
Multicellular organisms show the ability to replace damage cells, tissues and even whole organs through regeneration mechanisms. Plants show a remarkable regenerative potential. While the basic principles of plant regeneration have been known for a number of decades, the molecular and cellular mechanisms underlying such principles are currently starting to emerge. Some of these mechanisms point to the existence of highly reprogrammable cells. Developmental plasticity is a hallmark for stem cells, and stem cells are responsible for the generation of distinctive cell types forming plants. In the last years, a number of players and molecular mechanism regulating stem cell maintenance have been described, and some of them have also been involved in regenerative processes. These discoveries in plant stem cell regulation and regeneration invite us to rethink several of the classical concepts in plant biology such as cell fate specification and even the actual meaning of what we consider stem cells in plants. In this review we will cover some of these discoveries, focusing on the role of the plant stem cell function and regulation during cell and organ regeneration.
Topics: Cellular Reprogramming; Plant Development; Plants; Regeneration; Stem Cells
PubMed: 29981693
DOI: 10.1016/j.ydbio.2018.06.021 -
Seminars in Cell & Developmental Biology Aug 2019Light is a crucial environmental cue not only for photosynthetic energy production but also for plant growth and development. Plants employ sophisticated methods to... (Review)
Review
Light is a crucial environmental cue not only for photosynthetic energy production but also for plant growth and development. Plants employ sophisticated methods to detect and interpret information from incoming light. Five classes of photoreceptors have been discovered in the model plant Arabidopsis thaliana. These photoreceptors act either distinctly and/or redundantly in fine-tuning many aspects of plant life cycle. Unlike mobile animals, sessile plants have developed an enormous plasticity to adapt and survive in changing environment. By monitoring different information arising from ambient light, plants precisely regulate downstream signaling pathways to adapt accordingly. Given that changes in the light environment is typically synchronized with other environmental cues such as temperature, abiotic stresses, and seasonal changes, it is not surprising that light signaling pathways are interconnected with multiple pathways to regulate plant physiology and development. Indeed, recent advances in plant photobiology revealed a large network of co-regulation among different photoreceptor signaling pathways as well as other internal signaling pathways (e.g., hormone signaling). In addition, some photoreceptors are directly involved in perception of non-light stimuli (e.g., temperature). Therefore, understanding highly inter-connected signaling networks is essential to explore the photoreceptor functions in plants. Here, we summarize how plants co-ordinate multiple photoreceptors and their internal signaling pathways to regulate a myriad of downstream responses at molecular and physiological levels.
Topics: Photoreceptors, Plant; Plant Development; Plants; Signal Transduction
PubMed: 30946988
DOI: 10.1016/j.semcdb.2019.03.007 -
The New Phytologist Sep 2015985 I. 985 II. 986 III. 987 IV. 988 V. 989 989 References 989 SUMMARY: The development of multicellular organisms depends on correct establishment of symmetry both at... (Review)
Review
985 I. 985 II. 986 III. 987 IV. 988 V. 989 989 References 989 SUMMARY: The development of multicellular organisms depends on correct establishment of symmetry both at the whole-body scale and within individual tissues and organs. Setting up planes of symmetry must rely on communication between cells that are located at a distance from each other within the organism, presumably via mobile morphogenic signals. Although symmetry in nature has fascinated scientists for centuries, it is only now that molecular data to unravel mechanisms of symmetry establishment are beginning to emerge. As an example we describe the genetic and hormonal interactions leading to an unusual bilateral-to-radial symmetry transition of an organ in order to promote reproduction.
Topics: Animals; Plant Development; Plants
PubMed: 26086581
DOI: 10.1111/nph.13526 -
Journal of Basic Microbiology Nov 2023
Topics: Plants; Plant Development
PubMed: 37699752
DOI: 10.1002/jobm.202300512 -
Plant Signaling & Behavior 2020Uptake, assimilation, and recycling of nutrients are essential for optimal plant growth and development. A large number of studies have contributed significantly to... (Review)
Review
Uptake, assimilation, and recycling of nutrients are essential for optimal plant growth and development. A large number of studies have contributed significantly to highlight the major features that shape an efficient utilization of nutrients in plants, especially at the transcriptional level. However, only a few examples have explored the epigenetic mechanisms that are intrinsically associated to the transcriptional reprogramming events in response to nutritional fluctuations. In this review, we gather the chromatin-based mechanisms that have been described in response to variations of nutrients availability. At this time of genome and epigenome editing, such mechanisms could potentially represent new targets for crop improvement.
Topics: Epigenesis, Genetic; Plant Development; Plants
PubMed: 31674259
DOI: 10.1080/15592324.2019.1686236 -
Protoplasma May 2021Claims that plants have conscious experiences have increased in recent years and have received wide coverage, from the popular media to scientific journals. Such claims... (Review)
Review
Claims that plants have conscious experiences have increased in recent years and have received wide coverage, from the popular media to scientific journals. Such claims are misleading and have the potential to misdirect funding and governmental policy decisions. After defining basic, primary consciousness, we provide new arguments against 12 core claims made by the proponents of plant consciousness. Three important new conclusions of our study are (1) plants have not been shown to perform the proactive, anticipatory behaviors associated with consciousness, but only to sense and follow stimulus trails reactively; (2) electrophysiological signaling in plants serves immediate physiological functions rather than integrative-information processing as in nervous systems of animals, giving no indication of plant consciousness; (3) the controversial claim of classical Pavlovian learning in plants, even if correct, is irrelevant because this type of learning does not require consciousness. Finally, we present our own hypothesis, based on two logical assumptions, concerning which organisms possess consciousness. Our first assumption is that affective (emotional) consciousness is marked by an advanced capacity for operant learning about rewards and punishments. Our second assumption is that image-based conscious experience is marked by demonstrably mapped representations of the external environment within the body. Certain animals fit both of these criteria, but plants fit neither. We conclude that claims for plant consciousness are highly speculative and lack sound scientific support.
Topics: Consciousness; Humans; Plant Development; Plants
PubMed: 33196907
DOI: 10.1007/s00709-020-01579-w