Regulation of Chlorophyll Biogenesis by Phytochrome A

Sineshchekov, V.A.; Belyaeva, O. B.

doi:10.1134/s0006297919050043

Cited by 10 publications

(8 citation statements)

References 116 publications

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“…4). Our earlier observations have shown that, along with the well-known inhibition of the protochlorophyllide biosynthesis by FR (see review (25)), there was a stimulating affect of this light, and the sign of the effect depended on plant species/tissues, its genotype, and light conditions used (14,21). In particular, a similar stimulation of the Pchlide 655 and Pchlide 633 biosynthesis under FRp was observed in wild-type rice; however, FRc was strongly inhibiting for Pchlide 655 , what is at variance with the current results when FRc-high of a comparable fluence rate was ineffective.…”

Section: Discussionmentioning

confidence: 93%

Phytochrome A and its Functional Manifestations in Etiolated and Far‐red Light‐grown Seedlings of the Wild‐type Rice and its Hebiba and Cpm2 Mutants Deficient in the Defense‐related Phytohormone Jasmonic Acid

Sineshchekov

Koppel

Riemann

et al. 2020

Photochem & Photobiology

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Interaction between phytochromes and hormones is becoming one of the major issues in plant photophysiology. In this work, effects of defense‐related jasmonic acid (JA) on phytochrome A (phyA) were investigated by fluorescence spectroscopy making use of two JA biosynthesis mutants of rice: cpm2 with the inactivated gene allene oxide cyclase and hebiba with additional genes deleted. Constant far‐red light (FRc) mediated by phyA reduced its content in the wild type (WT) and mutants, and brought about domination of its light‐stable pool (phyA″) in WT and light‐labile pool (phyA′) in the mutants. Pulsed FRp was much less effective. This FR effect classifies as primarily HIR with a low fluence threshold; it comprises inhibition of phyA biosynthesis, stimulation of phyA″→phyA′ transformation and phyA′ destruction. In the mutants, phyA suppresses [Pchlide] under FRp (VLFR) and stimulates it under FRc (HIR); these effects are lacking in WT. Similarly, phyA suppresses roots'growth under FRp in the mutants but not in WT. These JA mutant features suggest that JA reduces the phyA functional activity primarily in its phyA″ form mediating HIR. This modulating JA action on phyA functions under FR limiting their extreme manifestations may have contributed to the evolutionary advances of the land plants.

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Section: Discussionmentioning

confidence: 93%

Phytochrome A and its Functional Manifestations in Etiolated and Far‐red Light‐grown Seedlings of the Wild‐type Rice and its Hebiba and Cpm2 Mutants Deficient in the Defense‐related Phytohormone Jasmonic Acid

Sineshchekov

Koppel

Riemann

et al. 2020

Photochem & Photobiology

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“…UV-B (280-315 nm) is perceived by UVR-8 (UV resistance locus 8) receptor. Phototropins, cryptochromes, and family Zeitlupe respond to UV-A (315-400 nm) and blue (400-495 nm) light, and phytochromes recognize red (600 nm) and far red (730 nm) light [54][55][56][57]. A. thaliana has five phytochromes designated as PHYA-PHYE.…”

Section: Light Triggers the Process Of De-etiolationmentioning

confidence: 99%

Role of Phytohormones and Light in De-etiolation

Kusnetsov

Дорошенко

Kudryakova

et al. 2020

Russ J Plant Physiol

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De-etiolation or transition from etiolated growth (skotomorphogenesis) to photomorphogenesis is one of the most intriguing and intricate stages of plant ontogenesis. It comprises reprogramming of plant cell metabolism, reorganizing the operation of the hormonal system, and altering plant morphology. Dark growth in the soil mainly depends on phytohormones with gibberellins and brassinosteroids playing the leading role; on the soil surface, light as a major exogenous agent starts operating. It inhibits activity of the main repressor of photomorphogenesis (COP1) and regulators of transcription, which govern realization of gibberellin (DELLA) and brassinosteroid (BZR1/BES1) signals and activates trans-factors initiating transition to autotrophic nutrition (for instance, HY5). The strategy of etiolated growth consists in achieving a quick exposure to sunlight at the expense of active elongation of the stem. For transition to autotrophic nutrition, a plant must form a photosynthetic apparatus and protect itself from possible light injury. This review deals with the role of the main regulatory components ensuring etiolated growth and transition to photomorphogenic development.

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“…In the porphyrins and chlorophyll metabolic pathway [ 34 , 35 , 36 ], chlorophyll a and chlorophyll b, in addition to catalytic synthesis pathways in which the original chlorophyll acid divinyl fat are converted back into the original chlorophyll acid fat of 8-ethylene reductase (DVR), did not display differentially expressed genes, and a total of 33 differentially expressed genes were detected, where 27 of them in green-flower buckwheat had significantly upregulated expression and 6 had significantly downregulated expression ( Figure 3 ).…”

Section: Resultsmentioning

confidence: 99%

Inflorescence Transcriptome Sequencing and Development of New EST-SSR Markers in Common Buckwheat (Fagopyrum esculentum)

Liu

Fang

Tang

et al. 2022

Plants

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Common buckwheat (Fagopyrum esculentum M.) is known for its adaptability, good nutrition, and medicinal and health care value. However, genetic studies of buckwheat have been hindered by limited genomic resources and genetic markers. In this study, Illumina HiSeq 4000 high-throughput sequencing technology was used to sequence the transcriptome of green-flower common buckwheat (Gr) with coarse pedicels and white-flower Ukrainian daliqiao (UD) with fine pedicels. A total of 118,448 unigenes were obtained, with an average length of 1248 bp and an N50 of 1850 bp. A total of 39,432 differentially expressed genes (DEGs) were identified, and the DEGs of the porphyrins and chlorophyll metabolic pathway had significantly upregulated expression in Gr. Then, a total of 17,579 sequences containing SSR loci were detected, and 20,756 EST-SSR loci were found. The distribution frequency of EST-SSR in the transcriptome was 17.52%, and the average distribution density was 8.21 kb. A total of 224 pairs of primers were randomly selected for synthesis; 35 varieties of common buckwheat and 13 varieties of Tartary buckwheat were verified through these primers. The clustering results well verified the previous conclusion that common buckwheat and Tartary buckwheat had a distant genetic relationship. The EST-SSR markers identified and developed in this study will be helpful to enrich the transcriptome information and marker-assisted selection breeding of buckwheat.

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Regulation of Chlorophyll Biogenesis by Phytochrome A

Cited by 10 publications

References 116 publications

Phytochrome A and its Functional Manifestations in Etiolated and Far‐red Light‐grown Seedlings of the Wild‐type Rice and its Hebiba and Cpm2 Mutants Deficient in the Defense‐related Phytohormone Jasmonic Acid

Phytochrome A and its Functional Manifestations in Etiolated and Far‐red Light‐grown Seedlings of the Wild‐type Rice and its Hebiba and Cpm2 Mutants Deficient in the Defense‐related Phytohormone Jasmonic Acid

Role of Phytohormones and Light in De-etiolation

Inflorescence Transcriptome Sequencing and Development of New EST-SSR Markers in Common Buckwheat (Fagopyrum esculentum)

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