Submicron ammonium sulfate particles deposited on leaf surfaces of a leafy vegetable (Komatsuna, Brassica rapa L. var. perviridis) are taken up by leaf and enhance nocturnal leaf conductance

2018 ◽  
Vol 187 ◽  
pp. 155-162 ◽  
Author(s):  
Akira Motai ◽  
Marina Yamazaki ◽  
Nana Muramatsu ◽  
Makoto Watanabe ◽  
Takeshi Izuta
Keyword(s):  
Ammonium Sulfate ◽  
Brassica Rapa ◽  
Leaf Conductance ◽  
Leafy Vegetable ◽  
Leaf Surfaces

scholarly journals Seedling Production of Pak Choy (Brassica rapa L. var chinensis) using Organic and Inorganic Nutrients

2017 ◽  
Vol 9 (2) ◽  
Author(s):  
Dody Priadi ◽  
Fiqolbi Nuro
Keyword(s):  
Brassica Rapa ◽  
Nutrient Solution ◽  
Growth Parameters ◽  
Pearson Correlation ◽  
Leafy Vegetable ◽  
Inorganic Nutrients ◽  
Vegetable Production ◽  
Seedling Production ◽  
Hydroponic Solution ◽  
Organic Vegetable Production

<p>Pak Choy or Bok Choy (<em>Brassica rapa </em>L. var. chinensis) is one of favorite Chinese leafy vegetable for various dishes in Indonesia. In this study, it was used as a plant model to identify the appropriate organic hydroponic nutrient solution for leafy vegetable seedling production. The seed was sown on rock wool slabs submerged with 200 ml of a nutrient solution containing biofertilizer of <em>Beyonic StarTmik@Lob</em> (0, 25, 50, 75, and 100%). commercial hydroponic solution (0, 25, 50, 75, and 100%) and its combination (25, 50, and 75%). The experiments were arranged in a CRD. Meanwhile, the obtained data was analyzed using ANOVA followed by DMRT. The relationship among growth parameters was observed using Pearson correlation analysis.  The result of the study showed that the combination of organic and inorganic nutrient (25% <em>Beyonic StarTmik@Lob</em> and 75% commercial hydroponic solution) resulted in the highest seedling growth parameters and leaf indices as well as the perfectly positive correlations among growth parameters. This result indicated that the use of organic nutrient alone was not appropriate for hydroponic seedling production of Pak Choy. Therefore, further study needs to be done to identify the hydroponic solution without inorganic nutrients towards the organic vegetable production.</p>

Effects of submicron ammonium sulfate particles on the growth and yield of komatsuna (Brassica rapa L. var. perviridis)

2017 ◽  
Vol 169 ◽  
pp. 278-286 ◽  
Author(s):  
Akira Motai ◽  
Satoshi Nakaba ◽  
I. Wuled Lenggoro ◽  
Makoto Watanabe ◽  
Yoshiharu Wada ◽  
...  
Keyword(s):  
Ammonium Sulfate ◽  
Brassica Rapa ◽  
Growth And Yield

Growth and glucosinolate profiles of a common Asian green leafy vegetable, Brassica rapa subsp. chinensis var. parachinensis (choy sum), under LED lighting

2020 ◽  
Vol 261 ◽  
pp. 108922 ◽  
Author(s):  
Wee Kee Tan ◽  
Viandra Goenadie ◽  
Hui Wen Lee ◽  
Xu Liang ◽  
Chiang Shiong Loh ◽  
...  
Keyword(s):  
Brassica Rapa ◽  
Leafy Vegetable ◽  
Led Lighting ◽  
Green Leafy Vegetable ◽  
Vegetable Brassica

Closing the food waste loop: Food waste anaerobic digestate as fertilizer for the cultivation of the leafy vegetable, xiao bai cai (Brassica rapa)

2020 ◽  
Vol 715 ◽  
pp. 136789 ◽  
Author(s):  
Jia Chin Cheong ◽  
Jonathan T.E. Lee ◽  
Jun Wei Lim ◽  
Shuang Song ◽  
Jonathan K.N. Tan ◽  
...  
Keyword(s):  
Brassica Rapa ◽  
Food Waste ◽  
Leafy Vegetable ◽  
Anaerobic Digestate

scholarly journals Enhancement of Population Size of a Biological Control Agent and Efficacy in Control of Bacterial Speck of Tomato through Salicylate and Ammonium Sulfate Amendments

2003 ◽  
Vol 69 (2) ◽  
pp. 1290-1294 ◽  
Author(s):  
Pingsheng Ji ◽  
Mark Wilson
Keyword(s):  
Biological Control ◽  
Population Size ◽  
Ammonium Sulfate ◽  
Pseudomonas Syringae ◽  
Sodium Salicylate ◽  
Biological Control Agent ◽  
Control Agent ◽  
Control Efficacy ◽  
Bacterial Speck ◽  
Leaf Surfaces

ABSTRACT Sodium salicylate and ammonium sulfate were applied to leaf surfaces along with suspensions of the biological control agents Pseudomonas syringae Cit7(pNAH7), which catabolizes salicylate, and Cit7, which does not catabolize salicylate, to determine whether enhanced biological control of bacterial speck of tomato could be achieved. Foliar amendment with salicylate alone significantly enhanced the population size and the efficacy of Cit7(pNAH7), but not of Cit7, on tomato leaves. Application of ammonium sulfate alone did not result in enhanced population size or biological control efficacy of either Cit7(pNAH7) or Cit7; however, when foliar amendments with both sodium salicylate and ammonium sulfate were applied, a trend toward further increases in population size and biological control efficacy of Cit7(pNAH7) was observed. This study demonstrates the potential of using a selective carbon source to improve the efficacy of a bacterial biological control agent in the control of a bacterial plant disease and supports previous conclusions that the growth of P. syringae in the phyllosphere is primarily carbon limited and secondarily nitrogen limited.

scholarly journals Combination of genetic analysis and ancient literature survey reveals the divergence of traditional Brassica rapa varieties from Kyoto, Japan

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Yaichi Kawakatsu ◽  
Tomoaki Sakamoto ◽  
Hokuto Nakayama ◽  
Kaori Kaminoyama ◽  
Kaori Igarashi ◽  
...  
Keyword(s):  
Genetic Analysis ◽  
Brassica Rapa ◽  
Leaf Shape ◽  
Genomic Analysis ◽  
Genomic Region ◽  
Leafy Vegetable ◽  
Snp Analysis ◽  
Gene Expression Analyses ◽  
Ancient Literature ◽  
Ancient Times

AbstractSince ancient times, humans have bred several plants that we rely on today. However, little is known about the divergence of most of these plants. In the present study, we investigated the divergence of Mibuna (Brassica rapa L. subsp. nipposinica L. H. Bailey), a traditional leafy vegetable in Kyoto (Japan), by combining genetic analysis and a survey of ancient literature. Mibuna is considered to have been bred 200 years ago from Mizuna, another traditional leafy vegetable in Kyoto. Mibuna has simple spatulate leaves, whereas Mizuna has characteristic serrated leaves. The quantitative trait loci (QTL) and gene expression analyses suggested that the downregulation of BrTCP15 expression contributed to the change in the leaf shape from serrated to simple spatulate. Interestingly, the SNP analysis indicated that the genomic region containing the BrTCP15 locus was transferred to Mibuna by introgression. Furthermore, we conducted a survey of ancient literature to reveal the divergence of Mibuna and found that hybridization between Mizuna and a simple-leaved turnip might have occurred in the past. Indeed, the genomic analysis of multiple turnip cultivars showed that one of the cultivars, Murasakihime, has almost the same sequence in the BrTCP15 region as Mibuna. These results suggest that the hybridization between Mizuna and turnip has resulted in the establishment of Mibuna.

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

The Coagulation Abnormalities in Systemic Lupus Erythematosus

1968 ◽  
Vol 20 (03/04) ◽  
pp. 457-464 ◽  
Author(s):  
L Gonyea ◽  
R Herdman ◽  
R. A Bridges
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Ammonium Sulfate ◽  
Lupus Erythematosus ◽  
Anticoagulant Activity ◽  
Species Specificity ◽  
Sensitive Assay ◽  
Systemic Lupus ◽  
Coagulation Abnormalities

SummaryAn anticoagulant occurring in 4 of 6 patients with SLE has been demonstrated by a sensitive assay utilizing an ammonium sulfate fraction of serum. The anticoagulant functions as an inhibitor of the activation of prothrombin. No species specificity was demonstrable. The inhibitor behaves clinically and chromatographically as an immunoglobulin, although an attempt to demonstrate directly the antibody nature of the inhibitor was not successful.A severe, apparently independent, decrease in the level of prothrombin was observed in the patient with hemorrhagic symptoms. In contrast to the anticoagulant activity, the low prothrombin has persisted during treatment.

Extraction and Partial Purification of Protease from Bilimbi (Averrhoa bilimbi L.)

2013 ◽  
Vol 10 (2) ◽  
pp. 29
Author(s):  
Normah Ismail ◽  
Nur' Ain Mohamad Kharoe
Keyword(s):  
Molecular Weight ◽  
Protein Content ◽  
Ammonium Sulfate ◽  
Molecular Weight Distribution ◽  
Weight Distribution ◽  
Protease Activity ◽  
Protein Concentration ◽  
Temperature Stability ◽  
Partial Purification ◽  
Ammonium Sulfate Precipitation

Unripe and ripe bilimbi (Averrhoa bilimbi L.) were ground and the extracted juices were partially purified by ammonium sulfate precipitation at the concentrations of 40 and 60% (w/v). The collected proteases were analysed for pH, temperature stability, storage stability, molecular weight distribution, protein concentration and protein content. Protein content of bilimbi fruit was 0.89 g. Protease activity of both the unripe and ripe fruit were optimum at pH 4 and 40°C when the juice were purified at 40 and 60% ammonium sulfate precipitation. A decreased in protease activity was observed during the seven days of storage at 4°C. Molecular weight distribution indicated that the proteases protein bands fall between IO to 220 kDa. Protein bands were observed at 25, 50 and 160 kDa in both the unripe and ripe bilimbi proteases purified with 40% ammonium sulfate, however, the bands were more intense in those from unripe bilimbi. No protein bands were seen in proteases purified with 60% ammonium sulfate. Protein concentration was higher for proteases extracted with 40% ammonium sulfate at both ripening stages. Thus, purification using 40% ammonium sulfate precipitation could be a successful method to partially purify proteases from bilimbi especially from the unripe stage. 

Sign in / Sign up

Export Citation Format

Share Document