Expression of circadian clock genes and diurnal oscillations of key physiological events in response to AsV and AsIII in soybean plants

Vezza, Mariana Elisa; Alderete, Lucas G. Sosa; Agostini, Elizabeth; Talano, Melina A.

doi:10.1016/j.envexpbot.2020.104054

Cited by 7 publications

(5 citation statements)

References 53 publications

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“…Among legumes, abiotic stresses such as heat, drought, and iron deficiency have been reported to change the timing of the expression of core clock genes in soybean, with different stresses causing different physiological effects [ 43 ]. However, the interconnection between the changes in clock gene expressions and physiological changes remains elusive [ 44 ]. The study conducted by Li et al [ 43 ] revealed that different soybean varieties with different iron uptake efficiencies may involve phase modulation as a mechanism to alleviate iron deficiency symptoms, demonstrating that it is important to dissect crop circadian clocks.…”

Section: Defining the Important Components Of Clock Researchmentioning

confidence: 99%

“…Similar to the function of AtELF4 in Arabidopsis, GmELF4 acts as a negative controller of flowering, delaying flowering via a range of unidentified molecular pathways. Other clock components that have been studied in soybean include GmLCL1 , GmTOC1 , GmPRR9 , and GmGI , which revealed an arsenic stress response that can affect physiological responses, such as stomatal aperture, that naturally exhibit diurnal oscillations [ 44 ]. Arsenic, which is commonly found in soil as arsenate and arsenite, is an extremely toxic metalloid that affects soybean growth and productivity.…”

Section: Legume Clock Research At a Glancementioning

confidence: 99%

“…Arsenic, which is commonly found in soil as arsenate and arsenite, is an extremely toxic metalloid that affects soybean growth and productivity. However, further studies are required to fully understand the link between arsenic exposure and the circadian rhythm of soybean [ 44 ]. The circadian clock components in soybean are known to be modified as a result of domestication and improvement, and further studies are needed to exploit these modifications to improve soybean productivity [ 80 ].…”

Section: Legume Clock Research At a Glancementioning

confidence: 99%

See 2 more Smart Citations

Circadian Rhythms in Legumes: What Do We Know and What Else Should We Explore?

Kugan

Rejab

Sahruzaini

et al. 2021

IJMS

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The natural timing devices of organisms, commonly known as biological clocks, are composed of specific complex folding molecules that interact to regulate the circadian rhythms. Circadian rhythms, the changes or processes that follow a 24-h light–dark cycle, while endogenously programmed, are also influenced by environmental factors, especially in sessile organisms such as plants, which can impact ecosystems and crop productivity. Current knowledge of plant clocks emanates primarily from research on Arabidopsis, which identified the main components of the circadian gene regulation network. Nonetheless, there remain critical knowledge gaps related to the molecular components of circadian rhythms in important crop groups, including the nitrogen-fixing legumes. Additionally, little is known about the synergies and trade-offs between environmental factors and circadian rhythm regulation, especially how these interactions fine-tune the physiological adaptations of the current and future crops in a rapidly changing world. This review highlights what is known so far about the circadian rhythms in legumes, which include major as well as potential future pulse crops that are packed with nutrients, particularly protein. Based on existing literature, this review also identifies the knowledge gaps that should be addressed to build a sustainable food future with the reputed “poor man’s meat”.

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Section: Defining the Important Components Of Clock Researchmentioning

confidence: 99%

Section: Legume Clock Research At a Glancementioning

confidence: 99%

Section: Legume Clock Research At a Glancementioning

confidence: 99%

See 1 more Smart Citation

Circadian Rhythms in Legumes: What Do We Know and What Else Should We Explore?

Kugan

Rejab

Sahruzaini

et al. 2021

IJMS

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“…However, the leaf movements under drought and heat stress, and in iron-deficient plants, went out of sync with the core clock gene expressions, suggesting that different stresses may have different physiological effects . Treatment of soybean with arsenate (As[V]) and arsenite (As[III]) could lead to changes in the amplitude of diurnal expressions of GmLCL1, GmPRR9, GmELF4, and GmGI (Gigantea), depending on the tissue and the form of arsenic compounds (Vezza et al, 2020). Stomatal movements and expressions of antioxidative enzymes were also altered by the As(V) and As(III) treatments.…”

Section: Introductionmentioning

confidence: 99%

“…Stomatal movements and expressions of antioxidative enzymes were also altered by the As(V) and As(III) treatments. Yet, the link between the changes in core clock gene expressions and physiological changes remain elusive (Vezza et al, 2020). All in all, the direct physiological consequences of the alteration of the soybean circadian clock as a result of stresses are mostly uncharacterized.…”

Section: Introductionmentioning

confidence: 99%

The Modification of Circadian Clock Components in Soybean During Domestication and Improvement

Lam

2020

Front. Genet.

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Agricultural production is greatly dependent on daylength, which is determined by latitude. Living organisms align their physiology to daylength through the circadian clock, which is made up of input sensors, core and peripheral clock components, and output. The light/dark cycle is the major input signal, moderated by temperature fluctuations and metabolic changes. The core clock in plants functions mainly through a number of transcription feedback loops. It is known that the circadian clock is not essential for survival. However, alterations in the clock components can lead to substantial changes in physiology. Thus, these clock components have become the de facto targets of artificial selection for crop improvement during domestication. Soybean was domesticated around 5,000 years ago. Although the circadian clock itself is not of particular interest to soybean breeders, specific alleles of the circadian clock components that affect agronomic traits, such as plant architecture, sensitivity to light/dark cycle, flowering time, maturation time, and yield, are. Consequently, compared to their wild relatives, cultivated soybeans have been bred to be more adaptive and productive at different latitudes and habitats for acreage expansion, even though the selection processes were made without any prior knowledge of the circadian clock. Now with the advances in comparative genomics, known modifications in the circadian clock component genes in cultivated soybean have been found, supporting the hypothesis that modifications of the clock are important for crop improvement. In this review, we will summarize the known modifications in soybean circadian clock components as a result of domestication and improvement. In addition to the well-studied effects on developmental timing, we will also discuss the potential of circadian clock modifications for improving other aspects of soybean productivity.

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