Changes in root architecture and endogenous hormone levels in two Malus rootstocks under alkali stress

Wen, Tian; Dong, Lijuan; Wang, Lei; Ma, Fengwang; Zou, Yangjun; Li, Cuiying

doi:10.1016/j.scienta.2017.09.015

Cited by 24 publications

(13 citation statements)

References 32 publications

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“…Alkali stress exerts a significant inhibitory effect on the growth and development of plants [22]. In particular, it exerts a most severe effect on the root system [6]. The root architecture damage of M. hupehensis (which is an alkali-sensitive species) was stronger than that of M. prunifolia (which is alkali-tolerant) under alkali stress [23].…”

Section: Growthmentioning

confidence: 99%

“…The effects of alkali stress on plant growth mainly manifested in the damage of partial root function, decreases of water content and root activity, destruction of the photosynthetic system, and a decrease of photosynthetic pigment levels [3]. Previous studies have shown that alkali stress can significantly inhibit the growth of apple seedlings, damage plasma membrane, and cause a series of reductions of physiological functions [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

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Exogenous Dopamine Application Promotes Alkali Tolerance of Apple Seedlings

Jiao

Zhang

et al. 2019

Plants

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Arid and semiarid apple producing areas suffer from severe alkalinity of soil, which strongly affects the yield and quality of apples. Dopamine (DA) is involved in metabolic activities in response to abiotic stress in plants. To detect the effects of exogenous DA application on the adaption of apple (Malus hupehensis) seedlings to alkali stress and as a protection from oxidative stress, 0.1 mM DA was identified as the most suitable concentration by hydroponic culture. Further experimentation showed that the growth and photosynthesis of apple seedlings were significantly inhibited under alkali stress, and more reactive oxygen species accumulated, compared with control. However, exogenous DA application suppressed the loss of the plant height, root length, chlorophyll levels, and photosynthetic capacity of apple seedlings that were caused by alkali stress. In the leaves of alkali stressed seedlings, the catalase, superoxide dismutase, and peroxidase activities were lower and hydrogen peroxide and malondialdehyde levels were higher than in the untreated plants. The presence of DA significantly alleviated such effects of alkali stress. In addition, exogenous DA application increased the antioxidant capacity of apple seedlings under alkali stress by increasing the level of chlorogenic acid. These results are significant for improving the alkali tolerance of apple in apple-producing areas with alkalized soil.

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Section: Growthmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Exogenous Dopamine Application Promotes Alkali Tolerance of Apple Seedlings

Jiao

Zhang

et al. 2019

Plants

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“…was used in this study. Seedlings were initially cultivated as described by Wen et al [1], after which the seedlings with 7-8 true leaves were moved to a hydroponics system and cultured according to the previous report by Wen et al [1]. The hydroponics system included plastic basins (35 cm × 25 cm × 10 cm) containing 5 L half-strength Hoagland nutrient solution [36] that was continuously aerated with an air pump.…”

Section: Plant Materials and Stress Treatmentsmentioning

confidence: 99%

“…Apple (Malus × domestica Borkh.) is one of the most important fruit crops and is primarily cultivated in arid and semiarid regions worldwide [1][2][3]. The stress conditions of salt-alkalinized soil are a major limitation to crop production worldwide.…”

Section: Introductionmentioning

confidence: 99%

“…However, decreases in rainfall and increases in evaporation have resulted in the salinization and alkalinization of the soil in this region. These changes are detrimental for apple tree growth [1]. Therefore, selecting the optimal apple rootstock that is resistant to salt-alkaline stress is an important goal for apple breeding programs and apple producers.…”

Section: Introductionmentioning

confidence: 99%

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Genome-Wide Identification and Characterization of Apple P3A-Type ATPase Genes, with Implications for Alkaline Stress Responses

Gao

Zhang

et al. 2020

Forests

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The P3A-type ATPases play crucial roles in various physiological processes via the generation of a transmembrane H+ gradient (∆pH). However, the P3A-type ATPase superfamily in apple remains relatively uncharacterized. In this study, 15 apple P3A-type ATPase genes were identified based on the new GDDH13 draft genome sequence. The exon-intron organization of these genes, the physical and chemical properties, and conserved motifs of the encoded enzymes were investigated. Analyses of the chromosome localization and ω values of the apple P3A-type ATPase genes revealed the duplicated genes were influenced by purifying selection pressure. Six clades and frequent old duplication events were detected. Moreover, the significance of differences in the evolutionary rates of the P3A-type ATPase genes were revealed. An expression analysis indicated that all of the P3A-type ATPase genes were specifically expressed in more than one tissue. The expression of one P3A-type ATPase gene (MD15G1108400) was significantly upregulated in response to alkaline stress. Furthermore, a subcellular localization assay indicated that MD15G1108400 is targeted to the plasma membrane. These results imply that MD15G1108400 may be involved in responses to alkaline stress. Our data provide insights into the molecular characteristics and evolutionary patterns of the apple P3A-type ATPase gene family and provide a theoretical foundation for future in-depth functional characterizations of P3A-type ATPase genes under alkaline conditions.

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Root morphology ion absorption and antioxidative defense system of two Chinese cabbage cultivars (Brassica rapa L.) reveal the different adaptation mechanisms to salt and alkali stress

Cao

Chen

et al. 2021

Protoplasma

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Changes in root architecture and endogenous hormone levels in two Malus rootstocks under alkali stress

Cited by 24 publications

References 32 publications

Exogenous Dopamine Application Promotes Alkali Tolerance of Apple Seedlings

Exogenous Dopamine Application Promotes Alkali Tolerance of Apple Seedlings

Genome-Wide Identification and Characterization of Apple P3A-Type ATPase Genes, with Implications for Alkaline Stress Responses

Root morphology ion absorption and antioxidative defense system of two Chinese cabbage cultivars (Brassica rapa L.) reveal the different adaptation mechanisms to salt and alkali stress

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