Effect of yeast extracts on higher plants

Kobayashi, Michiharu; Torigai, Yasuko; Takáhashi, Eiichi

doi:10.1007/bf02139640

Cited by 9 publications

(5 citation statements)

References 5 publications

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“…If no chromosomal translocation occurred in rtnlb16-1, an alternative explanation for the increased abortion in the heterozygotes may be directly linked to the disturbance in RTNLB16 expression and activity. The function of the ER is critical for nuclear fusion between the two polar nuclei during female gametogenesis as well as during double fertilization in the fusion between the sperm cells with the egg or central cell (Maruyama et al, 2014(Maruyama et al, , 2020Kobayashi and Nishikawa, 2023). Therefore, if RTNLB16 is involved in cellular activities in gametes, then asymmetry distribution of RTNLB16 isoforms between mutant pollen and WT ovules (and vice versa) might impair double fertilization.…”

Section: Discussionmentioning

confidence: 99%

Disproportion among reticulon-like 16 (RTNLB16) splice variants disrupts growth and decreases sensitivity to ABA and senescence in Arabidopsis

Khazma,

Levi,

Ben-Asher

et al. 2023

Preprint

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The Reticulon family proteins (RTNs) are membrane-spanning proteins found in the endoplasmic reticulum (ER) with diverse functions, such as ER membrane morphogenesis, vesicle formation, and trafficking. The plant-specific reticulon-like protein family (RTNLBs) comprises multiple members, yet their functions remain poorly understood. The Arabidopsis RTNLB16 gene has seven splice variants, each encoding seven distinct protein isoforms.We identified an Arabidopsis mutant (Salk_122275/rtnlb16-1) as a knockout for the upper coding frame, isoform 7, of RTNLB16 while overexpressing the other six isoforms through the CaMV 35S promoter at the left border of the T-DNA insertion.rtnlb16-1exhibits distinctive growth retardation and reduced chlorophyll levels. Under photoperiodic long day (16:8 h) conditions, activation of the 35S promoter intensifiesRTNLB16expression in the mutant, resulting in profound growth inhibition. Conversely, growth under continuous low-light (CLL) conditions restrains the overexpression and significantly mitigatesrtnlb16-1phenotype. Confocal microscopy experiments revealed the localization of RTNLB16:GFP in the tubular ER network, plasmodesmata, and potentially in Golgi bodies.Peculiarly, RTLB16/rtnlb16heterozygote plants exhibit non-Mendelian reduced fertility, suggesting potential involvement of RTNLB16 in reproductive development. Transcriptomics comparisons betweenrtnlb16-1and the wild type under CLL and 16:8h conditions revealed differential gene expression involved in salicylic acid, jasmonic acid, and abscisic acid responses, indicating activation of defense and osmotic stress responses contributing to the growth inhibition in the mutant. We further demonstrate thatrtnlb16has decreased sensitivity to abscisic acid and enhanced tolerance to darkness-induced senescence.Our findings highlight the importance of balanced expression among RTNLB16 isoforms for normal cellular and physiological activities in Arabidopsis. Additionally, our study underscores the significance of employing T-DNA mutants to investigate genes with multiple splice variants.

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Section: Discussionmentioning

confidence: 99%

Disproportion among reticulon-like 16 (RTNLB16) splice variants disrupts growth and decreases sensitivity to ABA and senescence in Arabidopsis

Khazma,

Levi,

Ben-Asher

et al. 2023

Preprint

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“…Owing to its higher content of amino acids, vitamins, and phytohormones, YE has long been known as a plant growth stimulator (Abdelaal et al, 2017;George et al, 2008). According to Kobayashi et al (1980), low YE concentration (0.1 ppm) is suitable for promoting plant growth. In addition, it is a natural cytokinin that promotes cell division and growth chlorophyll formation, and protein and…”

Section: Discussionmentioning

confidence: 99%

Microrhizome Induction and Curcumin Accumulation in Curcuma aromatica Salisb.

Phuong

Tran

et al. 2022

Acta Agrobot

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White turmeric (Curcuma aromatica Salisb.) contains notable secondary metabolites with significant health benefits. However, the efficiency of traditional cultivation of white turmeric is limited by many environmental factors. Therefore, it is of great significance to study the large-scale production of superior-quality microrhizomes for cultivation and secondary metabolite extraction, without relying on natural rhizomes. In this study, the effects of sucrose, plant growth regulators (6-benzyl amino purine – BAP, kinetin – KIN,

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“…Stoyanov and Kudrev (1978) provide evidence that the dry weight of roots, stems and leaves of maize could be increased by vitamins C, B 1 and B 6. It has also been shown that low concen- trations of yeast autolyzate containing appreciable quantities of B vitamins can produce substantial increases in yield in pea plants (Kobayashi et al, 1980).…”

Section: Discussionmentioning

confidence: 99%

Production of vitamins by Azospirillum brasilense in chemically-defined media

et al. 1993

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The production of vitamins by Azospirillum brasilense was studied in chemically-defined media amended with malate, gluconate and fructose. The liberation of vitamins was significantly affected by the presence of different carbon sources and the age of the culture. Thiamine, niacin and pantothenic acid were produced in large amounts. Thiamine and riboflavin were produced only in culture containing malate or fructose. Biotin was not detected in the supernatants of the culture media.

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Effect of yeast extracts on higher plants

Cited by 9 publications

References 5 publications

Disproportion among reticulon-like 16 (RTNLB16) splice variants disrupts growth and decreases sensitivity to ABA and senescence in Arabidopsis

Disproportion among reticulon-like 16 (RTNLB16) splice variants disrupts growth and decreases sensitivity to ABA and senescence in Arabidopsis

Microrhizome Induction and Curcumin Accumulation in Curcuma aromatica Salisb.

Production of vitamins by Azospirillum brasilense in chemically-defined media

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