Study of Zn accumulation and tolerance of HMA4 TILLING mutants of Brassica rapa grown under Zn deficiency and Zn toxicity

Plant Science ◽  
2019 ◽  
Vol 287 ◽  
pp. 110201 ◽  
Author(s):  
Begoña Blasco ◽  
Eloy Navarro-León ◽  
Juan Manuel Ruiz
Keyword(s):  
Brassica Rapa ◽  
Zn Deficiency ◽  
Zn Toxicity ◽  
Zn Accumulation

scholarly journals Arabidopsis thaliana zinc accumulation in leaf trichomes is correlated with zinc concentration in leaves

2020 ◽  
Author(s):  
Felipe K. Ricachenevsky ◽  
Tracy Punshon ◽  
David E. Salt ◽  
Janette P. Fett ◽  
Mary Lou Guerinot
Keyword(s):  
Arabidopsis Thaliana ◽  
Spatial Distribution ◽  
Growth And Yield ◽  
Zn Deficiency ◽  
Model Species ◽  
Nutritional Disorder ◽  
Leaf Trichomes ◽  
Zn Accumulation ◽  
Zn Homeostasis ◽  
Zn Status

AbstractZinc (Zn) is a key micronutrient. In humans, Zn deficiency is a common nutritional disorder, and most people acquire dietary Zn from eating plants. In plants, Zn deficiency can decrease plant growth and yield. Understanding Zn homeostasis in plants can improve agriculture and human health. While root Zn transporters in plat model species have been characterized in detail, comparatively little is known about shoot processes controlling Zn concentrations and spatial distribution. Previous work showed that Zn hyperaccumulator species such as Arabidopsis halleri accumulate Zn and other metals in leaf trichomes. The model species Arabidopsis thaliana is a non-accumulating plant, and to date there is no systematic study regarding Zn accumulation in A. thaliana trichomes. Here, we used Synchrotron X-Ray Fluorescence mapping to show that Zn accumulates at the base of trichomes of A. thaliana, as had seen previously for hyperaccumulators. Using transgenic and natural accessions of A. thaliana that vary in bulk leaf Zn concentration, we demonstrated that higher leaf Zn increases total Zn found at the base of trichome cells. Furthermore, our data suggests that Zn accumulates in the trichome apoplast, likely associated with the cell wall. Our data indicates that Zn accumulation in trichomes is a function of the Zn status of the plant, and provides the basis for future studies on a genetically tractable plant species aiming at understanding the molecular steps involved in Zn spatial distribution in leaves.

scholarly journals Identification of Novel Genomic Regions and Superior Alleles Associated with Zn Accumulation in Wheat Using a Genome-Wide Association Analysis Method

2020 ◽  
Vol 21 (6) ◽  
pp. 1928 ◽  
Author(s):  
Zhengfu Zhou ◽  
Xia Shi ◽  
Ganqing Zhao ◽  
Maomao Qin ◽  
Maria Itria Ibba ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Quantitative Trait ◽  
Genome Wide Association Study ◽  
Genome Wide Association ◽  
Zn Deficiency ◽  
Wheat Grains ◽  
Zn Accumulation ◽  
Genome Wide ◽  
A Genome ◽  
Trait Loci

Micronutrient deficiencies, and especially zinc (Zn) deficiency, pose serious health problems to people who mainly depend on cereal-based diets. Here, we performed a genome-wide association study (GWAS) to detect the genetic basis of the Zn accumulation in wheat (Triticum aestivum L.) grains with a diversity panel of 207 bread wheat varieties. To uncover authentic quantitative trait loci (QTL) controlling Zn accumulation, the varieties were planted in three locations. In total, 29 unique loci associated with Zn grain accumulation were identified. Notably, seven non-redundant loci located on chromosomes 1B, 3B, 3D, 4A, 5A, 5B, and 7A, were detected at least in two environments. Of these quantitative trait loci (QTL), six coincided with known QTL or genes, whereas the highest effect QTL on chromosome 3D identified in this study was not reported previously. Searches of public databases revealed that the seven identified QTL coincided with seven putative candidate genes linked to Zn accumulation. Among these seven genes, NAC domain-containing protein gene (TraesCS3D02G078500) linked with the most significant single nucleotide polymorphism (SNP) AX-94729264 on chromosome 3D was relevant to metal accumulation in wheat grains. Results of this study provide new insights into the genetic architecture of Zn accumulation in wheat grains.

scholarly journals Zinc Availability in Hydroponic Culture Influences Glucosinolate Concentrations in Brassica rapa

HortScience ◽  
2004 ◽  
Vol 39 (1) ◽  
pp. 84-86 ◽  
Author(s):  
Timothy W. Coolong ◽  
William M. Randle ◽  
Heather D. Toler ◽  
Carl E. Sams
Keyword(s):  
Nutritional Status ◽  
Brassica Rapa ◽  
Solution Culture ◽  
Linear Increase ◽  
Hydroponic Culture ◽  
Rapid Cycling ◽  
Zinc Availability ◽  
Zn Toxicity ◽  
Quadratic Response ◽  
Zinc Levels

Rapid cycling Brassica rapa L. were grown for 7 days in the presence of 11 levels of zinc (Zn) in hydroponic solution culture and evaluated for changes in Zn and glucosinolate (GS) content. Zinc levels were 0.05, 1, 5, 10, 25, 50, 75, 100, 125, 150, and 200 mg·L-1 Zn. Plants grown in solutions with ≥50 mg·L-1 Zn displayed severe Zn toxicity symptoms, grew little, or died and were not subsequently evaluated for GS content. Shoot Zn concentrations increased linearly with increasing Zn treatment levels. Gluconapin, which accounted for nearly 90% of the aliphatic GSs present, was the only aliphatic GS influenced by Zn, and decreased linearly with increasing Zn levels. Accumulation of glucobrassicin and 4-methoxyglucosbrassicin, both indole GSs, responded with a linear increase and quadratically, respectively, to Zn fertility. An aromatic GS, gluconasturtiin, was also influenced by Zn levels in solution, and had a quadratic response to increasing Zn. This suggested that Zn fertility can influence changes in GS that may affect flavor (bitterness, etc.) or medicinal attributes associated with the GS and their breakdown products, as well as elevate the nutritional status of Zn in the leaves of Brassica.

scholarly journals Calcium silicate ameliorates zinc deficiency and toxicity symptoms in barley plants through improvements in nitrogen metabolism and photosynthesis

2021 ◽  
Vol 43 (12) ◽  
Author(s):  
Valeria Paradisone ◽  
Eloy Navarro-León ◽  
Juan M. Ruiz ◽  
Sergio Esposito ◽  
Begoña Blasco
Keyword(s):  
Plant Growth ◽  
Zn Deficiency ◽  
Biotic Stresses ◽  
Zn Toxicity ◽  
Stress Effects ◽  
Stress Symptoms ◽  
Physiological Alterations ◽  
Zn Concentration ◽  
N Metabolism ◽  
Zn Stress

AbstractZinc (Zn) deficiency causes serious issues to plant growth and development, negatively affecting crops in many world regions. On the other hand, Zn toxicity impairs plant growth, producing physiological alterations, and even cell death. In plants, two of the processes that most determine growth are nitrogen (N) metabolism and photosynthesis. In the last decades, several authors proved that silicon (Si) and calcium (Ca) mitigate the effects of various abiotic and biotic stresses in plants. The objective of this research is to study the effect of Si application to barley (Hordeum vulgare cv. Nure) plants grown under Zn deficiency and Zn toxicity. Hence, barley plants were grown in hydroponics and supplied with a low Zn dose (0.01 µM ZnSO4) and a high Zn dose (100 µM ZnSO4) and were supplied with CaSiO3. Parameters related to Zn accumulation, N metabolism, and photosynthesis were measured. Zn stress affected leaf Zn concentration and reduced biomass in barley plants. Both Zn toxicity and deficiency inhibited N metabolism and enhanced photorespiration, increasing stress symptoms. CaSiO3 mitigated Zn stress effects, probably regulating Zn levels in plant cells and enhancing N metabolism and photosynthesis. We conclude that CaSiO3 could be beneficial to grow barley plants in soils with high or low availability of Zn.

Antifungal Activity of Brassica rapa-Derived Extracts Against F. oxysporum

Planta Medica ◽  
2013 ◽  
Vol 79 (10) ◽  
Author(s):  
JE Fierro ◽  
P Jiménez ◽  
ED Coy-Barrera
Keyword(s):  
Antifungal Activity ◽  
Brassica Rapa

Zinc application enhances grain zinc density in genetically-zinc-biofortified wheat grown on a low-zinc calcareous soil

2018 ◽  
pp. 107-110 ◽  
Keyword(s):  
Developing Countries ◽  
Grain Yield ◽  
Calcareous Soil ◽  
Zn Deficiency ◽  
Target Level ◽  
Zn Concentration ◽  
Grain Zinc ◽  
Zn Availability ◽  
Zinc Application ◽  
Grain Zn Concentration

Human zinc (Zn) deficiency is a worldwide problem, especially in developing countries due to the prevalence of cereals in the diet. Among different alleviation strategies, genetic Zn biofortification is considered a sustainable approach. However, it may depend on Zn availability from soils. We grew Zincol-16 (genetically-Zn-biofortified wheat) and Faisalabad-08 (widely grown standard wheat) in pots with (8 mg kg−1) or without Zn application. The cultivars were grown in a low-Zn calcareous soil. The grain yield of both cultivars was significantly (P≤0.05) increased with that without Zn application. As compared to Faisalabad-08, Zincol-16 had 23 and 41% more grain Zn concentration respectively at control and applied rate of Zn. Faisalabad-08 accumulated about 18% more grain Zn concentration with Zn than Zincol-16 without Zn application. A near target level of grain Zn concentration (36 mg kg−1) was achieved in Zincol-16 only with Zn fertilisation. Over all, the findings clearly signify the importance of agronomic Zn biofortification of genetically Zn-biofortified wheat grown on a low-Zn calcareous soil.

Особенности биохимического состава гибридов листовых овощных культур вида Brassica rapa L.

2010 ◽  
pp. 17-19
Author(s):  
А. М. Артемьева ◽  
С. В. Соловьева
Keyword(s):  
Brassica Rapa

В течение трех лет изучали 34 реципрокных гибрида, полученные при гибридизации 17 родительских пар между подвидами вида Brassica rapa. Анализировали содержание сухих веществ, белка, сахаров, аскорбиновой кислоты, общей кислотности, пигментов (хлорофиллы A и B, каротиноиды, каротины, β-каротин), нитратов. Показано, что все изученные гибриды пекинской, китайской, розеточной и японской капуст могут быть источниками высокого содержания аскорбиновой кислоты. В свою очередь, источниками высокого содержания хлорофиллов и β-каротина являются темно-зеленые образцы розеточной и японской капуст.

PENGARUH KOMPOS SAMPAH KOTA DAN PUPUK KANDANG SAPI TERHADAP PERTUMBUHAN DAN HASIL TANAMAN PAKCOY (BRASSICA RAPA, L. CHINENSIS) PADA ALUVIAL KABUPATEN INDRAMAYU

2018 ◽  
Vol 9 (2) ◽  
pp. 153-163
Author(s):  
Wiwik Ambarsari ◽  
Henly Yuliana
Keyword(s):  
Plant Height ◽  
Brassica Rapa ◽  
Block Design ◽  
Cattle Manure ◽  
Growth And Yield ◽  
Randomized Block Design ◽  
Two Factors ◽  
Number Of Leaves ◽  
Experimental Garden

The study aimed to determine the effect of the combination of city waste compost and cattle manure on the growth and yield of pakcoy plants (Brassica rapa, L. Chinensis) in Aluvial, Indramayu Regency. The study was conducted at the Experimental Garden of the Faculty of Agriculture, Wiralodra University, Indramayu Regency from March to August 2018. This study used Factorial Pattern Randomized Block Design with two factors. The first factor is city waste compost and the second factor is cattle manure with 4 levels: 0%, 3.0%, 6.0%, and 9.0%, repeated twice. The results showed that there was an independent influence between city waste compost and cattle manure on plant height and number of leaves. The best combination to increase the feasibility weight of pakcoy consumption is by giving city waste compost 9.0% (S4) and cattle manure 6.0% (K3).

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