The root as a drill

Santisree, Parankusam; Nongmaithem, Sapana; Sreelakshmi, Yellamaraju; Ivanchenko, Maria G.; Sharma, Rameshwar

doi:10.4161/psb.18936

Cited by 15 publications

(4 citation statements)

References 78 publications

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“…Copper (Cu) is unavoidable in winemaking: long-term use of copper fungicide [ 1 – 2 ] may increase the copper level in soil [ 3 – 4 ] and grape berry; winemaking equipment [ 5 ] and copper sulphate or copper citrate addition for eliminating H 2 S [ 6 – 7 ] may also increase the copper content in must. In a narrow range of low concentration, copper is an essential trace element in almost all organisms and plays an important positive role for organisms [ 8 – 10 ].…”

Section: Introductionmentioning

confidence: 99%

“…Since in a short period of time, Bordeaux mixture pesticides are still difficult to be replaced [ 25 ], and some vineyard soils in Germany [ 2 ] and Czech [ 3 ], and grapes and wines in Italy [ 7 – 8 ] were found exceeded Cu MSL of local regulation. In future, we will probably need to face the wine fermentation under high copper concentration and the extra problem to reduce the copper concentration of wines.…”

Section: Introductionmentioning

confidence: 99%

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Copper Tolerance and Biosorption of Saccharomyces cerevisiae during Alcoholic Fermentation

et al. 2015

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At high levels, copper in grape mash can inhibit yeast activity and cause stuck fermentations. Wine yeast has limited tolerance of copper and can reduce copper levels in wine during fermentation. This study aimed to understand copper tolerance of wine yeast and establish the mechanism by which yeast decreases copper in the must during fermentation. Three strains of Saccharomyces cerevisiae (lab selected strain BH8 and industrial strains AWRI R2 and Freddo) and a simple model fermentation system containing 0 to 1.50 mM Cu2+ were used. ICP-AES determined Cu ion concentration in the must decreasing differently by strains and initial copper levels during fermentation. Fermentation performance was heavily inhibited under copper stress, paralleled a decrease in viable cell numbers. Strain BH8 showed higher copper-tolerance than strain AWRI R2 and higher adsorption than Freddo. Yeast cell surface depression and intracellular structure deformation after copper treatment were observed by scanning electron microscopy and transmission electron microscopy; electronic differential system detected higher surface Cu and no intracellular Cu on 1.50 mM copper treated yeast cells. It is most probably that surface adsorption dominated the biosorption process of Cu2+ for strain BH8, with saturation being accomplished in 24 h. This study demonstrated that Saccharomyces cerevisiae strain BH8 has good tolerance and adsorption of Cu, and reduces Cu2+ concentrations during fermentation in simple model system mainly through surface adsorption. The results indicate that the strain selected from China’s stress-tolerant wine grape is copper tolerant and can reduce copper in must when fermenting in a copper rich simple model system, and provided information for studies on mechanisms of heavy metal stress.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Copper Tolerance and Biosorption of Saccharomyces cerevisiae during Alcoholic Fermentation

et al. 2015

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“…Whalen and Feldman [11] found that the phenotypic changes in roots induced by rhizosphere pressure were similar to those induced by exogenous ethylene (ETH). Plant roots produce ETH after sensing rhizosphere pressure, thus promoting the root system to penetrate into the soil [12][13][14]. Additionally, other hormone signals are also involved in mediating the root response to rhizosphere pressure, leading to various phenotypic changes in roots.…”

Section: Introductionmentioning

confidence: 99%

The Roles of Hormone Signals Involved in Rhizosphere Pressure Response Induce Corm Expansion in Sagittaria trifolia

Tang

Liu

et al. 2023

IJMS

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Soil is the base for conventional plant growth. The rhizosphere pressure generated from soil compaction shows a dual effect on plant growth in agricultural production. Compacted soil leads to root growth stagnation and causes bending or thickening, thus affecting the growth of aboveground parts of plants. In arrowhead (Sagittaria trifolia L.), the corms derived from the expanded tips of underground stolons are its storage organ. We found that the formation of corms was significantly delayed under hydroponic conditions without rhizosphere pressure originating from soil/sand. In the initial stage of corm expansion, the anatomic structure of arrowhead corm-forming parts harvested from hydroponics and sand culture was observed, and we found that the corm expansion was derived from cell enlargement and starch accumulation. Comparative transcriptome analysis indicated that the corm expansion was closely related to the change in endogenous hormone levels. Endogenous abscisic acid and salicylic acid concentrations were significantly increased in sand-cultured corms. Higher ethylene and jasmonic acid contents were also detected in all arrowhead samples, demonstrating that these hormones may play potential roles in the rhizosphere pressure response and corm expansion. The expression of genes participating in hormone signaling could explain the rising accumulation of certain hormones. Our current results draw an extensive model to reveal the potential regulation mechanism of arrowhead corm expansion promoted by rhizosphere pressure, which will provide important references for further studying the molecular mechanism of rhizosphere pressure modulating the development of underground storage organs in other plants.

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“…moisture, light or gravity), hormonal pathways, and cytoskeletal and cell wall dynamics influence the direction of root growth [ 4 ]. External cues signal changes in hormone signaling pathways, including auxin [ 12 – 14 ], ethylene [ 8 , 15 ], cytokinin [ 16 ] and brassinosteroid pathways [ 17 ]. Downstream of hormonal and environmental perception, changes in the cytoskeleton and in cell wall deposition patterns modulate cell division and cell expansion dynamics, thus mediating root movements.…”

Section: Introductionmentioning

confidence: 99%

TNO1, a TGN-localized SNARE-interacting protein, modulates root skewing in Arabidopsis thaliana

Roy

Bassham

2017

BMC Plant Biol

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BackgroundThe movement of plant roots within the soil is key to their ability to interact with the environment and maximize anchorage and nutrient acquisition. Directional growth of roots occurs by a combination of sensing external cues, hormonal signaling and cytoskeletal changes in the root cells. Roots growing on slanted, impenetrable growth medium display a characteristic waving and skewing, and mutants with deviations in these phenotypes assist in identifying genes required for root movement. Our study identifies a role for a trans-Golgi network-localized protein in root skewing.ResultsWe found that Arabidopsis thaliana TNO1 (TGN-localized SYP41-interacting protein), a putative tethering factor localized at the trans-Golgi network, affects root skewing. tno1 knockout mutants display enhanced root skewing and epidermal cell file rotation. Skewing of tno1 roots increases upon microtubule stabilization, but is insensitive to microtubule destabilization. Microtubule destabilization leads to severe defects in cell morphology in tno1 seedlings. Microtubule array orientation is unaffected in the mutant roots, suggesting that the increase in cell file rotation is independent of the orientation of microtubule arrays.ConclusionsWe conclude that TNO1 modulates root skewing in a mechanism that is dependent on microtubules but is not linked to disruption of the orientation of microtubule arrays. In addition, TNO1 is required for maintenance of cell morphology in mature regions of roots and the base of hypocotyls. The TGN-localized SNARE machinery might therefore be important for appropriate epidermal cell file rotation and cell expansion during root growth.

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The root as a drill

Cited by 15 publications

References 78 publications

Copper Tolerance and Biosorption of Saccharomyces cerevisiae during Alcoholic Fermentation

Copper Tolerance and Biosorption of Saccharomyces cerevisiae during Alcoholic Fermentation

The Roles of Hormone Signals Involved in Rhizosphere Pressure Response Induce Corm Expansion in Sagittaria trifolia

TNO1, a TGN-localized SNARE-interacting protein, modulates root skewing in Arabidopsis thaliana

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