Regulation of leaf and root physiology of sweet potato (Ipomoea batatas [L.] Lam.) with exogenous hormones under potassium deficiency stress

2019 ◽  
Vol 66 (5) ◽  
pp. 600-613 ◽  
Author(s):  
Ming Liu ◽  
Aijun Zhang ◽  
Xiaoguang Chen ◽  
Houhao Sun ◽  
Rong Jin ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Potassium Deficiency ◽  
Exogenous Hormones ◽  
Root Physiology

Potassium starvation affects biomass partitioning and sink–source responses in three sweet potato genotypes with contrasting potassium-use efficiency

2018 ◽  
Vol 69 (5) ◽  
pp. 506 ◽  
Author(s):  
Jidong Wang ◽  
Guopeng Zhu ◽  
Yue Dong ◽  
Hui Zhang ◽  
Zed Rengel ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Net Photosynthesis ◽  
Potassium Deficiency ◽  
Biomass Partitioning ◽  
High K ◽  
K Deficiency ◽  
Use Efficiency ◽  
K Concentration ◽  
Source Sink

Rooted single leaves of sweet potato (Ipomoea batatas L.) produce and translocate photosynthates, thus representing an ideal model for characterising the source–sink relationships and responses to various environments. A hydroponics culture study was conducted with rooted single leaves of sweet potato to determine intraspecific variation in growth, biomass partitioning, and associated physiological changes in response to variable potassium (K) supply among genotypes Ji22 (low K-use efficiency), Nan88 (high K-uptake efficiency) and Xu28 (high K-use efficiency). Potassium deficiency suppressed biomass accumulation in blades, petioles and roots in all three genotypes. Root length of diameters <0.25 mm and 0.25–0.5 mm was significantly less for K-deficient than K-sufficient roots of all genotypes, but the difference was proportionally greater in the K-inefficient genotype Ji22 than the other two genotypes. Potassium deficiency also severely inhibited net photosynthesis of blades in Nan88 and Ji22, as well reducing photosynthate translocation, increasing starch, hexose and sucrose concentrations, and decreasing K concentration in blades. The genotypes varied in photosynthesis-related responses to the K deficiency. Xu28 had greater blade K concentration and net photosynthesis as well as stable maximum quantum yield of photosystem II (FV/FM, with FV = FM – F0) under K deficiency, possibly because of a better source–sink balance and more efficient translocation of photosynthates to roots and K to blade compared with genotypes Ji22 and Nan88. Impaired phloem loading during K deficiency was associated with a decline in photosynthetic rate and decreased carbohydrate supply from blades, resulting in restricted root growth.

Batatins VII-X, glycolipid ester-type dimers from sweet potato (Ipomoea batatas)

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
D Rosas-Ramírez ◽  
R Pereda-Miranda
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas

Pengaruh Profilaksis Ekstrak Ubi Jalar Ungu (Ipomoea batatas L.) terhadap Kadar Malondialdehida Hepar Tikus Putih (Rattus norvegicus) Jantan Galur Wistar yang Diinduksi Karagenan

2018 ◽  
Vol 15 (2) ◽  
pp. 146
Author(s):  
BRILIAN DINANTI ◽  
FITRI HANDAJANI
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Wistar Rats ◽  
Group Method ◽  
Control Group ◽  
Intraplantar Injection ◽  
Significant Difference ◽  
Male Wistar Rats ◽  
Potato Extract ◽  
Purple Sweet Potato

<p>Liver is an organ with complex metabolism. When the liver is inflamed, cellular immunity will defend against inflammatory agents by stimulating immune cells to produce reactive oxygen species (ROS). Excessive ROS accumulation cause oxydative stress with increased  liver malondialdehyde (MDA) level. Some researches showed that purple sweet potato contain flavonoids (anthocyanins) that functioned as antioxydants. This study aimed to show the prophylactic effect of purple sweet potato extract to the liver MDA level of male Wistar rats induced by carrageenan.</p><p>This study used post-only control group method using 18 male Wistar rats divided into 3 groups: group of rats without treatment, group of rats induced by 0,1 ml of 1% carrageenan by intraplantar injection on day-8, and group of rats given with 872 mg/kgBW of purple sweet potato extract for 7 days and induced by 0,1 ml of 1% carrageenan. In the end of the study, the liver MDA levels were measured by Thio-Barbituric Acid method on each groups.</p><p>The results of One-Way ANOVA test showed there was no significant difference (p = 0,290) between group of rats without treatment (<em>x̅</em>= 207,50) and group of rats induced by carrageenan (<em>x̅</em>=233,17). Then, there is no significant difference (p = 0.978) between group of rats induced by carrageenan and group of rats given with prophylactic purple sweet potato extract and induced by carrageenan (<em>x̅</em>= 232,50).</p><p>The conclusion of this study is giving intraplantar injection of carrageenan can increase liver MDA level insignificantly and giving prophylactic purple sweet potato extract has an effect to decrease the liver MDA level of rats induced by carragenan insignificantly because it contains anthocyanins as antioxidants.</p><p> </p><strong>Keywords: </strong>Liver, <em>Ipomoea batatas</em> L., Malondialdehyde, Anthocyanins

Analisis Nutrisi Umbi Ubi Jalar (Ipomoea batatas (L.) Lam.) untuk Konsumsi Bayo dan Anak-anak Suku Dani di Distrik Kurulu Kabupaten Jayawijaya

Agrotek ◽  
2018 ◽  
Vol 3 (2) ◽  
Author(s):  
Andrew B. Pattikawa ◽  
Antonius Suparno ◽  
Saraswati Prabawardani
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Nutritional Value ◽  
Animal Feed ◽  
Ash Content ◽  
Infants And Children ◽  
Chemical Analyses ◽  
Food Crop ◽  
Sweet Potatoes ◽  
Development Center

<em>Sweet potato is an important staple food crop especially for the local people of Central Highlands Jayawijaya. There are many accessions that have always been maintained its existence to enrich their various uses. Traditionally, sweet potato accessions were grouped based on the utilization, such as for animal feed, cultural ceremonies, consumption for adults, as well as for infants and children. This study was aimed to analyze the nutritional value of sweet potatoes consumed by infants and children of the Dani tribe. Chemical analyses were conducted at the Laboratory of Post-Harvest Research and Development Center, Cimanggu, Bogor. The results showed that each of 4 (four) sweet potato accessions which were consumed by infants and children had good nutrient levels. Accession Sabe showed the highest water content (72.56%), vitamin C (72.71 mg/100 g), Fe (11.85 mg/100 g), and K levels (130.41 mg / 100 grams). The highest levels of protein (1.44%), fat (1.00%), energy (154.43 kkal/100 gram), carbohydrate (35.47%), starch (30.26%), reducing sugar (3.44%), riboflavin (0.18 mg/100 g), and vitamin A (574.40 grams IU/100 were produced by accession Manis. On the other hand, accession Saborok produced the highest value for ash content (1.32%), vitamin E (28.30 mg/100 g), and ?-carotene (64.69 ppm). The highest level of crude fiber (1.81 %) and thiamin (0.36 mg/100 g) was produced by accession Yuaiken.</em>

scholarly journals Enhancement of the Antiobesity and Antioxidant Effect of Purple Sweet Potato Extracts and Enhancement of the Effects by Fermentation

Antioxidants ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 888
Author(s):  
Seul Gi Lee ◽  
Jongbeom Chae ◽  
Dong Se Kim ◽  
Jung-Bok Lee ◽  
Gi-Seok Kwon ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Radical Scavenging ◽  
The Body ◽  
Brown Adipocyte ◽  
Obese Mice ◽  
Adipose Tissues ◽  
White Adipocytes ◽  
Beige Adipocytes ◽  
Purple Sweet Potato

The browning of white adipocytes, which transforms energy-storing white adipocytes to heat-producing beige adipocytes, is considered a strategy against metabolic diseases. Several dietary compounds, such as anthocyanins, flavonoids, and phenolic acids, induce a brown adipocyte-like phenotype in white adipocytes. In this study, we demonstrated that purple sweet potato (Ipomoea batatas) extract (PSP) exhibited potent radical scavenging activity. In addition, PSP was found to contain large amounts of phenolic, flavonoid, and anthocyanin compounds; the amount of these compounds was affected by fermentation. Functionally, PSP-induced adipose browning in high-fat-diet (HFD)-induced obese mice. The administration of PSP significantly suppressed the body weight gain and abnormal expansion of white adipose tissues in the obese mice. The expression of adipose browning-related genes was higher in the inguinal white adipose tissues from the PSP-treated mice than those in the HFD-fed mice. Moreover, PSP-treated 3T3-L1 adipocytes formed multilocular lipid droplets, similar to those formed in the 3T3-L1 adipocytes treated with a browning induction cocktail. The PSP-treated cells had an increased expression level of mitochondria and lipolysis-related genes. The browning effects of PSP were enhanced by fermentation with Lactobacillus. This study, to our knowledge, is the first to identify a new mechanism to increase the antiobesity effects of PSP by inducing adipocyte browning of adipocytes.

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