Effect of exogenous abscisic acid on morphology, growth and nutrient uptake of rice (Oryza sativa) roots under simulated acid rain stress

Liu, Hongyue; Ren, Xiaoqian; Zhu, Jiuzheng; Wu, Xi; Liang, Chanjuan

doi:10.1007/s00425-018-2922-x

Cited by 41 publications

(16 citation statements)

References 70 publications

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“…After 30 days of treatment, the rice growth (including the plant height and tillers number) restored under all PMS treatments, indicating the inhibitory effect on rice growth induced by PMS can be repaired in practical weeding. The recovery of rice growth was mainly due to the widely reported self-repairing effect of rice (Liu et al, 2018;Sun et al, 2019). As shown in Figure 5C, the difference in the yield of all PMS-treated rice was not obvious.…”

Section: Evaluation Of Pms Practical Applicationmentioning

confidence: 85%

Pretilachlor Releasable Polyurea Microcapsules Suspension Optimization and Its Paddy Field Weeding Investigation

et al. 2020

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In this study, pretilachlor was encapsulated into polyurea microcapsules prepared by water-initiated polymerization of polyaryl polymethylene isocyanate and eventually made into pretilachlor microcapsules suspension (PMS). We used response surface methodology (RSM) combined with the Box-Behnken design (BBD) model to optimize the formulation of PMS. The encapsulation efficiency (EE) of PMS was investigated with respect to three independent variables including wall material dosage (X 1), emulsifier dosage (X 2), and polymerization stirring speed (X 3). The results showed that the regression equation model had a satisfactory accuracy in predicting the EE of PMS. To achieve an optimal condition for PMS preparation, the dose of wall material was set to 5%, the dose of emulsifier was set to 3.5% and the polymerization stirring speed was set to 200 rpm. The EE of PMS was up to 95.68% under the optimized condition, and the spherical shape with smooth surface morphology was observed. PMS was also proven to have delayed release capability and in vivo herbicidal activity against barnyard grass [Echinochloa crusgalli (L.) Beauv.] with an LC 50 value of 274 mg/L. Furthermore, PMS had efficient weed management compared to commercially available 30% pretilachlor emulsifier (PE), showing a promising potential application for weeding paddy fields.

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Section: Evaluation Of Pms Practical Applicationmentioning

confidence: 85%

Pretilachlor Releasable Polyurea Microcapsules Suspension Optimization and Its Paddy Field Weeding Investigation

et al. 2020

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“…Plants can alter their root morphology, including length, volume, and surface area, to adapt to particular environmental stressors. RGR root values can also be used to gauge healthy plant growth under stressful environmental conditions (Ju et al 2017a;Liu et al 2018b). We found that lower pH SAR , A, B, C, D) indicate a significant difference (P < 0.05, Duncan's test) among soil types under a given SAR condition.…”

Section: The Impact Of Sar and Soil Type On Root Growth And Morphologymentioning

confidence: 99%

“…Nutrient uptake through plant roots can support plant growth and environmental stress resistance (Liu et al 2018b), and changes in nutrient availability or uptake may result in growth inhibition. Acid rain can alter the ability of plant roots to absorb and utilize nutrient elements (Zhang et al 2016;Ju et al 2017a;Liu et al 2018b). Consistent with this, we found that SAR pH significantly affected J. curcas root nutrient contents.…”

Section: The Impact Of Sar and Soil Type On Root Nutrient Contentsmentioning

confidence: 99%

“…As roots are keenly sensitive to environmental stressors, root physiology and morphology are generally reflective of root growth conditions (Liu et al 2018a, b). Roots are vital for long-term plant adaptation to acid rain, and they have important functions, such as the absorption and transportation of water and nutrients in soil (Zhang et al 2016;Liu et al 2018b). Nutrient elements are essential to maintaining physiological metabolic activity and associated root growth and development.…”

Section: Introductionmentioning

confidence: 99%

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Tolerant mechanism of Jatropha curcas L. roots to acid rain in soils with different acid-buffering capacities

Xiao

Zhang

et al. 2021

Acta Physiol Plant

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Acid rain remains a global environmental issue that can indirectly impact plant root growth and health by mediating soil acidification. The impact of acid rain on the roots of Jatropha curcas L., however, has not been thoroughly evaluated to date in soils with a range of buffering capacities. We, therefore, explored the ability of J. curcas roots to tolerate acid rain in a range of soil types by exposing samples to simulated acid rain (SAR) (pH2.5, pH3.5, pH4.5, pH5.6) and then examining the impact of such exposure on root morphology, relative growth rate (RGR root ), nutrient absorption, enzymatic activity, and microbial biomass. Yellow-brown soil (YBS) and purple soil (PS) were found to be better able to buffer SAR-mediated acidification, thereby providing superior benefits to J. curcas root growth as compared to red soil (RS) and yellow soil (YS) under these experimental conditions. SAR (pH 4.5) significantly enhanced Ca, K, and Mg absorption by J. curcas roots, thereby improving their growth characteristics, whereas SAR (pH 2.5) impaired K and Mg absorption and thus suppressed root growth. K and Mg absorption characteristics were regulated by changes in plasma membrane H + -ATPase activity under these different SAR treatment conditions. Morphological and growth (RGR root ) adaptations of J. curcas roots to SAR treatment were associated with superoxide dismutase activity levels therein. SAR (pH 4.5) was sufficient to bolster the rhizosphere microbial activity of J. curcas seedlings, and correlation analyses revealed that root growth was regulated by rhizosphere microbial biomass P content under SAR treatment conditions.

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“…Previous studies suggested that the regulatory effect of ABA on the growth of roots varies among species. For example, in rice (Oryza sativa L.), exogenous ABA increases root biomass and modifies root morphology, including density and number of adventitious roots (Liu et al 2018). By contrast, in some legume species, ABA was reported to depress the development of lateral roots (Di et al 2018;Liang and Harris.…”

Section: Changes In Sucrose and Hormone Content During Storage Root Fmentioning

confidence: 99%

Carbohydrate, phytohormone, and associated transcriptome changes during storage root formation in alligatorweed (Alternanthera philoxeroides)

Yin

Tian

et al. 2020

Weed Sci

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The storage root of alligatorweed [Alternanthera philoxeroides (Mart.) Griseb.] growing in terrestrial habitats is an important metamorphic organ for its propagation, overwintering, and spread. However, the regulatory mechanism adventitious root expansion to form storage roots is still unclear. To reveal the changes accompanying the root-swelling process, we quantified sugar, soluble protein, and phytohormone content in adventitious and storage roots. Results demonstrated that sucrose, fructose, and soluble protein increased in storage roots, whereas abscisic acid (ABA), indoleacetic acid (IAA), brassinosteroid (BR), gibberellin, jasmonic acid, and cytokinin (trans-zeatin [tZ] and isopentenyladenine [iP] and the corresponding ribosides tZR and iPR). tZ-type (tZR and tZ) content decreased, suggesting the involvement of sugars and hormones in the formation of storage roots. To further reveal the molecular basis of A. philoxeroides’s ability to form storage roots and provide candidate genes for molecular function analyses, we assembled a de novo transcriptome of A. philoxeroides based on four sets of RNA-sequencing data. According to functional annotation and expression profiling, 42 unigenes involved in sucrose synthesis and hydrolysis were identified, in addition to 70, 58, and 78 unigenes in ABA, BR, and IAA signal transduction, respectively. The quantitative reverse transcriptase polymerase chain reaction analysis revealed 21 unigenes involved in sugar metabolism and hormone signal transduction were differentially expressed during the formation of storage roots. These results revealed metabolic changes during the formation of storage roots and provide candidate genes involved in sugar and phytohormone metabolism in A. philoxeroides.

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Effect of exogenous abscisic acid on morphology, growth and nutrient uptake of rice (Oryza sativa) roots under simulated acid rain stress

Cited by 41 publications

References 70 publications

Pretilachlor Releasable Polyurea Microcapsules Suspension Optimization and Its Paddy Field Weeding Investigation

Pretilachlor Releasable Polyurea Microcapsules Suspension Optimization and Its Paddy Field Weeding Investigation

Tolerant mechanism of Jatropha curcas L. roots to acid rain in soils with different acid-buffering capacities

Carbohydrate, phytohormone, and associated transcriptome changes during storage root formation in alligatorweed (Alternanthera philoxeroides)

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