Flavonoids from Vicia faba Seed Exudates

1990 ◽  
Vol 45 (9-10) ◽  
pp. 1070-1072 ◽  
Author(s):  
Francisco Tomás-Lorente ◽  
Manuela M. Garcia-Grau ◽  
Francisco A. Tomás-Barberán
Keyword(s):  
Vicia Faba ◽  
Flavonoid Glycosides ◽  
Signal Function ◽  
Ecological Role ◽  
Legume Seed ◽  
Nod Genes ◽  
Flavonoid Aglycones ◽  
Vicia Faba L ◽  
First Time ◽  
Rhizobium Nodulation

Abstract From the seed exudates of Vicia faba L. (cv. Muchamiel) the flavonoid aglycones 7,3′,4′-trihydroxyflavone, 7,4′-dihydroxyflavone, quercetin and kaempferol, and the flavonoid glycosides quercetin 7-glucoside and kaempferol 7-glucoside were identified. This is the first time that the flavonoids present in Vicia seed exudates are described. The study of the flavonoids present in legume seed and root exudates is especially important since these substances may act as chemical signals activating or inhibiting Rhizobium nodulation genes. In fact, the activating effect on Rhizobium nod genes of 7,3′,4′-trihydroxyflavone and 7,3′-dihydroxyflavone has previously been reported. It is remarkable, that these compounds increase dramatically in mature pods, and these tissues might have an additional ecological role in the signal function on Rhizobium to establish the symbiosis

Calcium improves apoplastic–cytosolic ion homeostasis in salt-stressed Vicia faba leaves

2017 ◽  
Vol 44 (5) ◽  
pp. 515
Author(s):  
Sherif H. Morgan ◽  
Sylvia Lindberg ◽  
Pooja Jha Maity ◽  
Christoph-Martin Geilfus ◽  
Christoph Plieth ◽  
...  
Keyword(s):  
Plant Growth ◽  
Vicia Faba ◽  
Ion Homeostasis ◽  
Direct Addition ◽  
Vicia Faba L ◽  
Ratiometric Imaging ◽  
First Time

Salinity disturbs both apoplastic and cytosolic Ca2+ and pH ([Ca2+]apo, [Ca2+]cyt, pHapo and pHcyt) homeostasis, and decreases plant growth. Seedlings of Vicia faba L. cv. Fuego were cultivated in hydroponics for 7 days under control, salinity (S), extra Ca (Ca) or salinity with extra Ca (S+Ca) conditions. The [Ca2+]apo, and pHapo in the leaves were then recorded in parallel by a pseudoratiometric method, described here for the first time. Lower [Ca2+]apo and higher pHapo were obtained under salinity, whereas extra Ca supply increased the [Ca2+]apo and acidified the pHapo. Moreover, the ratiometric imaging recorded that [Ca2+]cyt and pHcyt were highest in S+Ca plants and lowest in control plants. After all pretreatments, direct addition of NaC6H11O7 to leaves induced a decrease in [Ca2+]apo in control and S+Ca plants, but not in S and Ca plants, and only slightly affected pHapo. Addition of NaCl increased [Ca2+]cyt in protoplasts from all plants but only transiently in protoplasts from S+Ca plants. Addition of NaCl decreased pHcyt in protoplasts from Ca-pretreated plants. We conclude that Ca supply improves both apoplastic and cytosolic ion homeostasis. In addition, NaC6H11O7 probably causes transport of Ca from the apoplast into the cytosol, thereby leading to a higher resting [Ca2+]cyt.

Preparative separation of flavonoid glycosides and flavonoid aglycones from the leaves of Platycladus orientalis by REV-IN and FWD-IN high-speed counter-current chromatography

2019 ◽  
Vol 11 (33) ◽  
pp. 4260-4266
Author(s):  
Qian Liu ◽  
Yanling Geng ◽  
Xiao Wang ◽  
Jia Li ◽  
Jinqian Yu
Keyword(s):  
High Speed ◽  
Flavonoid Glycosides ◽  
Preparative Separation ◽  
Flavonoid Aglycones ◽  
Platycladus Orientalis ◽  
Counter Current ◽  
First Time

Three flavonoid glycosides and four flavonoid aglycones were isolated and purified for the first time from the leaves of Platycladus orientalis via two different elution modes of high-speed counter-current chromatography.

Flavonoid constituents of seed coats of Vicia faba (Fabaceae) in relation to genetic control of their color

1989 ◽  
Vol 67 (5) ◽  
pp. 1600-1604 ◽  
Author(s):  
C. Nozzolillo ◽  
L. Ricciardi ◽  
V. Lattanzio
Keyword(s):  
Genetic Control ◽  
Vicia Faba ◽  
Condensed Tannins ◽  
Coat Color ◽  
Seed Coat Color ◽  
Flavonoid Aglycones ◽  
Vicia Faba L ◽  
Color Control ◽  
Genetically Determined ◽  
Seed Coats

Flavonoid aglycones were identified from Vicia faba L. seed coats corresponding to eight genetically determined colors. Myricetin predominates over quercetin in beige, black, brown, green, red, and violet seeds. Kaempferol is present in substantial amounts only in spotted seeds. White seeds have only trace amounts of quercetin and kaempferol and are the only ones without proanthocyanidins. Flavones of the apigenin type occur in all colors but white. Anthocyanins (malvidin, delphinidin, petunidin, and cyanidin glycosides) are present only in violet seeds and are obviously responsible for their color. The dark colors of black, brown, and red seeds apparently result from unidentified polymers. It is concluded that the two loci, a and b, proposed by Ricciardi et al. (1985) as the sites of genetic control of seed-coat color, control the amount and type of flavonoids produced: locus a that of flavonoid monomers (flavonols, etc.) and locus b that of flavonoid polymers (condensed tannins).

Incompatibilité unilatérale chez Vicia faba L. I. Analyse globale de croisements intraspécifiques entre quatre sous-espèces

Agronomie ◽  
1983 ◽  
Vol 3 (5) ◽  
pp. 443-449 ◽  
Author(s):  
Joël LE GUEN ◽  
Gérard MORIN ◽  
Jeanine POISSON
Keyword(s):  
Vicia Faba ◽  
Vicia Faba L

FITOTOKSISITAS KINERJA HERBISIDA OKSIFLOURFEN DAN GLIFOSAT PADA KACANG FABA (Vicia faba L.)

2020 ◽  
Vol 4 (1) ◽  
pp. 1-9
Author(s):  
Achmad Yozar Perkasa
Keyword(s):  
Vicia Faba ◽  
Protoporphyrin Ix ◽  
Vicia Faba L

Penelitian ini dilakukan di Laboratorium Farmakologi Fakultas Pertanian Universitas Thessaly dengan membahas efek herbisida oksifluorfen, glifosat terhadap tanaman kacang faba. Herbisida oksifluorfen mengandung bahan aktif oksifluorfen yang termasuk dalam kelompok kimia eter difenil. Mekanisme kerja herbisida ini adalah menargetkan enzim protoporphyrogen oksidase (Protox) dan protoporphyrin IX (Protogen IX). Pengamatan dilakukan dengan tujuan mengetahui dan mengevaluasi fitotoksisitas aplikasi herbisida terhadap tanaman kacang faba. Hasil penelitian menunjukkan aplikasi herbisida oksifluorfen dan glifosat masing-masing menunjukkan gejala fitotoksisitas secara jelas pada minggu ke-2 setelah aplikasi pada tanaman kacang faba. Hasil ini berhubungan dengan kandungan bahan aktif dan mekanisme mode aksi herbisida tersebut, serta kondisi lingkungan, faktor yang paling berpengaruh adalah suhu.

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