Late Elongated Hypocotyl Positively Regulates Salt Stress Tolerance in Medicago truncatula

Lu, Zhichao; Liu, Haiyang; Kong, Yiming; Wen, Liangzhi; Yang, Zhao; Zhou, Chuanen; Han, Li

doi:10.3390/ijms24129948

Cited by 3 publications

(1 citation statement)

References 48 publications

(74 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Medicago truncatula, a few clock genes have been reported, including the MtLHY gene, which orchestrates the endogenous circadian rhythm in nodules and positively regulates the salt stress response [45,46], MtLUX controls the expression of clock genes, nodule formation, leaf movement, and flowering time [47]. Circadian clock genes form a complicated regulatory network, and the regulation mechanism remains unclear in M. truncatula.…”

Section: Introductionmentioning

confidence: 99%

The Roles of the PSEUDO-RESPONSE REGULATORs in Circadian Clock and Flowering Time in Medicago truncatula

Wang,

Zhang,

Liu

et al. 2023

IJMS

Self Cite

View full text Add to dashboard Cite

PSEUDO-RESPONSE REGULATORs (PRRs) play key roles in the circadian rhythms and flowering in plants. Here, we identified the four members of the PRR family in Medicago truncatula, including MtPRR9a, MtPRR9b, MtPRR7 and MtPRR5, and isolated their Tnt1 retrotransposon-tagged mutants. They were expressed in different organs and were nuclear-localized. The four MtPRRs genes played important roles in normal clock rhythmicity maintenance by negatively regulating the expression of MtGI and MtLHY. Surprisingly, the four MtPRRs functioned redundantly in regulating flowering time under long-day conditions, and the quadruple mutant flowered earlier. Moreover, MtPRR can recruit the MtTPL/MtTPR corepressors and the other MtPRRs to form heterodimers to constitute the core mechanism of the circadian oscillator.

show abstract

Section: Introductionmentioning

confidence: 99%

The Roles of the PSEUDO-RESPONSE REGULATORs in Circadian Clock and Flowering Time in Medicago truncatula

Wang,

Zhang,

Liu

et al. 2023

IJMS

Self Cite

View full text Add to dashboard Cite

show abstract

Timely symbiosis: circadian control of legume-rhizobia symbiosis

Rowson,

Jolly,

Dickson

et al. 2024

Biochemical Society Transactions

View full text Add to dashboard Cite

Legumes house nitrogen-fixing endosymbiotic rhizobia in specialised polyploid cells within root nodules. This results in a mutualistic relationship whereby the plant host receives fixed nitrogen from the bacteria in exchange for dicarboxylic acids. This plant-microbe interaction requires the regulation of multiple metabolic and physiological processes in both the host and symbiont in order to achieve highly efficient symbiosis. Recent studies have showed that the success of symbiosis is influenced by the circadian clock of the plant host. Medicago and soybean plants with altered clock mechanisms showed compromised nodulation and reduced plant growth. Furthermore, transcriptomic analyses revealed that multiple genes with key roles in recruitment of rhizobia to plant roots, infection and nodule development were under circadian control, suggesting that appropriate timing of expression of these genes may be important for nodulation. There is also evidence for rhythmic gene expression of key nitrogen fixation genes in the rhizobium symbiont, and temporal coordination between nitrogen fixation in the bacterial symbiont and nitrogen assimilation in the plant host may be important for successful symbiosis. Understanding of how circadian regulation impacts on nodule establishment and function will identify key plant-rhizobial connections and regulators that could be targeted to increase the efficiency of this relationship.

show abstract

Unlocking Nature’s Rhythms: Insights into Secondary Metabolite Modulation by the Circadian Clock

Pérez-Llorca,

Müller

2024

IJMS

View full text Add to dashboard Cite

Plants, like many other living organisms, have an internal timekeeper, the circadian clock, which allows them to anticipate photoperiod rhythms and environmental stimuli to optimally adjust plant growth, development, and fitness. These fine-tuned processes depend on the interaction between environmental signals and the internal interactive metabolic network regulated by the circadian clock. Although primary metabolites have received significant attention, the impact of the circadian clock on secondary metabolites remains less explored. Transcriptome analyses revealed that many genes involved in secondary metabolite biosynthesis exhibit diurnal expression patterns, potentially enhancing stress tolerance. Understanding the interaction mechanisms between the circadian clock and secondary metabolites, including plant defense mechanisms against stress, may facilitate the development of stress-resilient crops and enhance targeted management practices that integrate circadian agricultural strategies, particularly in the face of climate change. In this review, we will delve into the molecular mechanisms underlying circadian rhythms of phenolic compounds, terpenoids, and N-containing compounds.

show abstract

Late Elongated Hypocotyl Positively Regulates Salt Stress Tolerance in Medicago truncatula

Cited by 3 publications

References 48 publications

The Roles of the PSEUDO-RESPONSE REGULATORs in Circadian Clock and Flowering Time in Medicago truncatula

The Roles of the PSEUDO-RESPONSE REGULATORs in Circadian Clock and Flowering Time in Medicago truncatula

Timely symbiosis: circadian control of legume-rhizobia symbiosis

Unlocking Nature’s Rhythms: Insights into Secondary Metabolite Modulation by the Circadian Clock

Contact Info

Product

Resources

About