Water stress and increased ploidy level enhance antioxidant enzymes, phytohormones, phytochemicals and polyphenol accumulation of tetraploid induced wallflower

Fakhrzad, Fazilat; Jowkar, Abolfazl

doi:10.1016/j.indcrop.2023.117612

Cited by 5 publications

(3 citation statements)

References 48 publications

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“…Instead, polyploidy can be accountable for influencing hormonal imbalance in plants. Altered levels of phytohormones, with augmented cytokinin and decreased auxins may be a key factor, which necessitates further studies (Tossi et al, 2022;Fakhrzad et al, 2023).…”

Section: Resultsmentioning

confidence: 99%

Morpho-physiological characterization of second generation colchiploids in sweet orange (<i>Citrus sinensis </i>(L.) Osbeck) cv. Mosambi

Kiran,

Singh,

Singh

et al. 2024

J. Hortic. Sci.

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Induction of tetraploidy in citrus is commonly meant for the development of triploid seedless cultivars as well as resistance against abiotic and biotic stresses. Three-year-old, 20 second-generation colchicine treated (0.05, 0.10, 0.15 and 0.20%) plants (colchiploids), established from the putative tetraploid branches of the first generation colchiploids of sweet orange (Citrus sinensis (L.) Osbeck) cv. Mosambi vegetatively propagated on Jatti khatti rootstock, along with their wild (parent) type, were characterized based on morphological and physiological traits. Plant height and canopy volume were reduced, but stem girth, nodes per shoot and bark: wood increased in the majority of the second-generation colchiploids related to the wild type. Colchiploids also possessed improved flower characteristics in terms of length and width. The stomatal dimensions increased, but stomatal concentration reduced in all the colchiploids. Colchicine treatment also caused significant variations in leaf gas exchange parameters, including photosynthetic rate, intercellular CO2 concentration, leaf net transpiration rates, stomatal conductance, and intrinsic water use efficiency in colchiploids affecting their photosynthetic activities. The solid tetraploids identified on the basis of morpho-physiological characterization can be used in future breeding programmes for the development of triploid seedless citrus cultivars or can be used for the mitigation of biotic and abiotic stresses.

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Section: Resultsmentioning

confidence: 99%

Morpho-physiological characterization of second generation colchiploids in sweet orange (<i>Citrus sinensis </i>(L.) Osbeck) cv. Mosambi

Kiran,

Singh,

Singh

et al. 2024

J. Hortic. Sci.

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“…Interestingly, the regulating mechanism of antioxidant enzyme activity in polyploid is an intricate process. Fakhrzad’s research into tetraploid wallflowers found that the extensive reprogramming of genes involved in hormonal signaling, reactive oxygen species detoxification, osmotic adjustment, and enhanced antioxidant defense system might contribute to the superior resistance of polyploid plants [ 77 ]. As for triploid ‘Mantianxing’, further studies are needed to understand the molecular regulation mechanisms behind drought resistance.…”

Section: Discussionmentioning

confidence: 99%

The Response and Evaluation of Morphology, Physiology, and Biochemistry Traits in Triploid Passiflora edulis Sims ‘Mantianxing’ to Drought Stress

Su,

Yang,

Zhou

et al. 2024

Plants

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As one of the most influential environmental factors, drought stress greatly impacts the development and production of plants. Triploid-induced Passiflora edulis Sims ‘Mantianxing’ is an important new cultivar for multi-resistance variety selective breeding, which is one of the P. edulis breeding essential targets. However, the performance of triploid ‘Mantianxing’ under drought stress is unknown. In order to study the drought resistance of triploid ‘Mantianxing’, our study compared drought-related indicators in diploids and triploids under natural drought experiments, including morphological, physiological, and biochemical characteristics. Results showed that triploid P. edulis ‘Mantianxing’ showed variable responses to drought treatment. Compared with diploids, triploids showed higher photosynthesis and chlorophyll fluorescence, osmotic adjustment substances, and antioxidant enzyme activity under drought stress and faster chlorophyll biosynthesis and growth recovery after rewatering. Generally speaking, these results indicate that the drought resistance of triploid P. edulis is superior to diploid. This study provides scientific information for breeding stress tolerance variety of P. edulis ‘Mantianxing’ new cultivar.

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“…The diploid and tetraploid induced wallflowers [ 16 ] (6 months old) were used as plant samples. All the plants were grown in media supplemented with peat: perlite: loamy soil (1:1:1) and kept in a greenhouse at a temperature of 24/20 ± 2 °C and a natural photoperiod.…”

Section: Methodsmentioning

confidence: 99%

Gene expression analysis of drought tolerance and cuticular wax biosynthesis in diploid and tetraploid induced wallflowers

Fakhrzad,

Jowkar

2024

BMC Plant Biol

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Whole-genome doubling leads to cell reprogramming, upregulation of stress genes, and establishment of new pathways of drought stress responses in plants. This study investigated the molecular mechanisms of drought tolerance and cuticular wax characteristics in diploid and tetraploid-induced Erysimum cheiri. According to real-time PCR analysis, tetraploid induced wallflowers exhibited increased expression of several genes encoding transcription factors (TFs), including AREB1 and AREB3; the stress response genes RD29A and ERD1 under drought stress conditions. Furthermore, two cuticular wax biosynthetic pathway genes, CER1 and SHN1, were upregulated in tetraploid plants under drought conditions. Leaf morphological studies revealed that tetraploid leaves were covered with unique cuticular wax crystalloids, which produced a white fluffy appearance, while the diploid leaves were green and smooth. The greater content of epicuticular wax in tetraploid leaves than in diploid leaves can explain the decrease in cuticle permeability as well as the decrease in water loss and improvement in drought tolerance in wallflowers. GC‒MS analysis revealed that the wax components included alkanes, alcohols, aldehydes, and fatty acids. The most abundant wax compound in this plant was alkanes (50%), the most predominant of which was C29. The relative abundance of these compounds increased significantly in tetraploid plants under drought stress conditions. These findings revealed that tetraploid-induced wallflowers presented upregulation of multiple drought-related and wax biosynthesis genes; therefore, polyploidization has proved useful for improving plant drought tolerance.

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Water stress and increased ploidy level enhance antioxidant enzymes, phytohormones, phytochemicals and polyphenol accumulation of tetraploid induced wallflower

Cited by 5 publications

References 48 publications

Morpho-physiological characterization of second generation colchiploids in sweet orange (<i>Citrus sinensis </i>(L.) Osbeck) cv. Mosambi

Morpho-physiological characterization of second generation colchiploids in sweet orange (<i>Citrus sinensis </i>(L.) Osbeck) cv. Mosambi

The Response and Evaluation of Morphology, Physiology, and Biochemistry Traits in Triploid Passiflora edulis Sims ‘Mantianxing’ to Drought Stress

Gene expression analysis of drought tolerance and cuticular wax biosynthesis in diploid and tetraploid induced wallflowers

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