Effects of uniconazole or gibberellic acid application on the lignin metabolism in relation to lodging resistance of culm in common buckwheat (<i>Fagopyrum esculentum</i> M.)

Fang, Xiaomei; Liu, X.; Zhang, Y.; Huang, Kehui; Li, Y.; Nie, J.; She, Hengzhi; Ruan, Renwu; Yuan, Xiaohui; Yi, Zelin

doi:10.1111/jac.12274

Cited by 25 publications

(11 citation statements)

References 43 publications

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“…It is well accepted that lignin is indispensable for the structural integrity of plant stems (Ma ; Fang et al . ). In this paper, evidence was gathered that wounding increased the synthesis of lignin.…”

Section: Discussionmentioning

confidence: 97%

Double benefits of mechanical wounding in enhancing chilling tolerance and lodging resistance in wheat plants

Wang

Huang

et al. 2019

Plant Biol J

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Chilling and lodging are major threats to wheat production. However, strategies that can be used to effectively mitigate the adverse effects of these threats are still far from clear. Mechanical wounding is a traditional agronomic measure, whereas information about the role it plays in wheat chilling and lodging is scant.• The aim of the present study was to investigate mechanisms underlying the protective roles of mechanical wounding in alleviating damage from chilling at jointing stage and enhancing lodging resistance after anthesis of winter wheat (Triticum aestivum L.).• Our data show that net photosynthesis rate, maximum photochemical efficiency of photosystem II, activity of the antioxidant enzymes and osmolytes were significantly increased in the latest fully expanded leaves of wounded plants under chilling. Wounding also reduced hydrogen peroxide accumulation, electrolyte leakage and water loss in wounded plants. Moreover, mechanical wounding significantly reduced the length but increased the diameter and wall thickness of the basal second internode of the main stem. Quantitative and histochemical analysis further indicated that wounding increased lignin accumulation and activity of enzymes involved in lignin synthesis, which resulted in increased mechanical strength and the lodging resistance index in the main stem.• We conclude from our data that mechanical wounding confers both cold tolerance by alleviating the damage caused by chilling at jointing stage and lodging resistance after anthesis of wheat plants.

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Section: Discussionmentioning

confidence: 97%

Double benefits of mechanical wounding in enhancing chilling tolerance and lodging resistance in wheat plants

Wang

Huang

et al. 2019

Plant Biol J

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“…2014; Fang et al . 2018). In the current experiment, UCZ, N application rate and plant density enhanced maize internode diameter, plumpness, cortex strength, bending strength and lignin accumulation.…”

Section: Discussionmentioning

confidence: 99%

“…2015; Fang et al . 2018). Our previous studies showed that uniconazole (UCZ) can decrease lodging rate, enhance antioxidant defence and grain‐filling in maize and wheat (Ahmad et al .…”

Section: Introductionmentioning

confidence: 99%

Effect of uniconazole and nitrogen level on lodging resistance and yield potential of maize under medium and high plant density

Ahmad

Yang

et al. 2021

Plant Biol J

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Lodging in maize results in grain yield reduction. This experiment investigated the effects of different application rates of the growth retardant, uniconazole (UCZ), and nitrogen (N) on medium and high maize population densities on lodging resistance and yield. UCZ was applied to maize seeds at concentrations of 0 (U0) and 25 (U25) mg kg−1, and three different N application rates, 0 (N0), 150 (N150) and 225 (N225) kg ha−1, at plant densities of 75,000 (D1) and 105,000 plants ha−1 (D2). UCZ application, different N rates and plant population density affected the lodging resistance and yield attributes of maize. The diameter, plumpness, cortex penetration and bending strengths of the internodes were enhanced with UCZ and N application at medium and high plant density, where maximum values were obtained with U25N150D1. Internode length increased in the high‐density population and higher N rate, whereas UCZ reduced internode length, where maximum internode length was obtained with U0N225D2. Plant height, centre of gravity height, ear and height above ear‐bearing node were higher with the high N rate, while UCZ reduced it significantly. UCZ, N rate and plant density enhanced lignin accumulation in the third internode and ear‐bearing internode, where maximum values were obtained with U25N150D1. Yield and yield attributes were also improved by UCZ, N rate and population density. Treatment with U25N150D2 significantly improved grain yield of maize compared with the other treatments.

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“…Uniconazole (UCZ) is a triazole-type compound and its application can reduce the lodging rate and protect plants from various stresses (Duan et al 2008, Wang et al 2015a, Fang et al 2018b. The application of triazole improved the PN, E, maximal quantum yield of PSII photochemistry (Fv/Fm), photochemical quenching coefficient (qp), and PSII efficiency in herbaceous peony (Xia et al 2018), as well as enhancing the Chl content and PN in Cartharanthus roseus, Photinia, Pyracantha, and dwarf Burford Holly (Frymire andCole 1992, Jaleel et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Uniconazole and nitrogen fertilization trigger photosynthesis and chlorophyll fluorescence, and delay leaf senescence in maize at a high population density

Ahmad¹,

Ahmad²,

Kamran³

et al. 2021

Photosynt.

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Ci-intercellular carbon dioxide concentration; E-transpiration rate; ETR-photosynthetic electron transport rate; F0-minimal fluorescence yield of the dark-adapted state; Fm-maximum fluorescence yield of the dark-adapted state; Fv-variable fluorescence; Fv/Fm-maximal quantum yield of PSII photochemistry; gs-stomatal conductance; MDA-malondialdehyde; PN-net photosynthetic rate; POD-peroxidase; qN-nonphotochemical quenching coefficient; qp-photochemical quenching coefficient; SOD-superoxide dismutase; ФPSII-effective quantum yield of PSII photochemistry.

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Effects of uniconazole or gibberellic acid application on the lignin metabolism in relation to lodging resistance of culm in common buckwheat (Fagopyrum esculentum M.)

Cited by 25 publications

References 43 publications

Double benefits of mechanical wounding in enhancing chilling tolerance and lodging resistance in wheat plants

Double benefits of mechanical wounding in enhancing chilling tolerance and lodging resistance in wheat plants

Effect of uniconazole and nitrogen level on lodging resistance and yield potential of maize under medium and high plant density

Uniconazole and nitrogen fertilization trigger photosynthesis and chlorophyll fluorescence, and delay leaf senescence in maize at a high population density

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