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Titolo:
Effects of exogenous injection of different sugars on leaf photosynthesis,dry matter production and adenosine 5 '-diphosphate glucose pyrophosphorylase (AGPase) activity in sweet potato, Ipomoea batatas (Lam.)
Autore:
Kadowaki, M; Kubota, F; Saitou, K;
Indirizzi:
Kyushu Univ, Grad Sch, Div Bioresource & Bioenvironm Sci, Lab Plant Prod Physiol,Higashi Ku, Fukuoka 8128581, Japan Kyushu Univ Fukuoka Japan 8128581 iol,Higashi Ku, Fukuoka 8128581, Japan
Titolo Testata:
JOURNAL OF AGRONOMY AND CROP SCIENCE-ZEITSCHRIFT FUR ACKER UND PFLANZENBAU
fascicolo: 1, volume: 186, anno: 2001,
pagine: 37 - 41
SICI:
0931-2250(200103)186:1<37:EOEIOD>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
TUBEROUS ROOT PRODUCTION; ADP-GLUCOSE; EXPRESSION; CULTIVARS; SUCROSE; STORAGE; GENE;
Keywords:
adenosine 5 '-diphosphate glucose pyrophosphorylase (AGPase); fructose; glucose; sucrose; sweet potato; tuberous root production;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
17
Recensione:
Indirizzi per estratti:
Indirizzo: Kubota, F Kyushu Univ, Grad Sch, Div Bioresource & Bioenvironm Sci, Lab Plant Prod Physiol,Higashi Ku, Fukuoka 8128581, Japan Kyushu Univ Fukuoka Japan 8128581 i Ku, Fukuoka 8128581, Japan
Citazione:
M. Kadowaki et al., "Effects of exogenous injection of different sugars on leaf photosynthesis,dry matter production and adenosine 5 '-diphosphate glucose pyrophosphorylase (AGPase) activity in sweet potato, Ipomoea batatas (Lam.)", J AGRON CR, 186(1), 2001, pp. 37-41

Abstract

Solutions of sucrose, glucose and fructose were artificially injected intothe stems of sweet potato plants. The effects of solution injection on both dry matter production and the activity of adenosine 5'-diphosphate glucose pyrophosphorylase (AGPase) in tuberous roots were investigated and compared. The total weight of carbon (Tc) artificially and photosynthetically supplied to a plant during the treatment period of 40 days was 0.987-1.869 times the weight of photosynthetically assimilated carbon alone. At the final sampling time, the dry matter weight of tuberous roots in the plants injected with sugar solutions showed a 2.73-9.13-fold increase over that of the control plant. The root weight linearly increased with Tc. The activity of AGPase was also enhanced by solution injections, with 27-63 % increases compared to the control, but was not significantly related to Tc The injection of sugar solutions is concluded to have a dual effect on root production insweet potato. One effect is that the increased sugar concentration in the plant increases AGPase and sink activities, and the other effect is that the increased carbon supply quantitatively promotes starch synthesis and accumulation in roots.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/10/20 alle ore 15:58:13