The Relationship between Environmental Factors and Behaviour of Stonlata in the Rice Plant : 2. On the diurnal movement of the stomata

Ishihara, Kuni; Ishida, Yukinori; Ogura, Tadaharu

doi:10.1626/jcs.40.497

Cited by 16 publications

(7 citation statements)

References 3 publications

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“…The opening and closing of rice stomates are known to be very sensitive to light intensity. The stomates of rice leaves are totally closed when the plants are placed in the dark (6) and also in the evening (5). Thus, when the leaf resistance was measured in the dark, it was regarded as the cuticular resistance.…”

mentioning

confidence: 99%

Leaf cuticular resistance of rice varieties

Yoshida

Reyes

1976

Soil Science and Plant Nutrition

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mentioning

confidence: 99%

Leaf cuticular resistance of rice varieties

Yoshida

Reyes

1976

Soil Science and Plant Nutrition

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“…2). The contribution of the stomatal exchange to the atmosphere–leaf exchange appeared to be weaker in the SF1(PI) period because the stomatal aperture is reduced under weak solar radiation (Ishihara et al . 1971), which could counterbalance the enhancement effect of the lower air temperature on the stomatal deposition in the SF1(PI) period.…”

Section: Discussionmentioning

confidence: 99%

“…Enhancement in stomatal and/or cuticular deposition is a possible cause of the large deposition recorded in the old leaves. It is, however, known that the stomatal aperture of old rice leaves is clearly lower than that of new rice leaves (Ishihara et al . 1971).…”

Section: Discussionmentioning

confidence: 99%

Ammonia exchange between rice leaf blades and the atmosphere: Effect of broadcast urea and changes in xylem sap and leaf apoplastic ammonium concentrations

Hayashi

Hiradate

Ishikawa

et al. 2008

Soil Science and Plant Nutrition

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To elucidate the effects of broadcast urea on ammonia (NH 3 ) exchange between the atmosphere and rice, we investigated the NH 3 exchange flux between rice leaf blades and the atmosphere, xylem sap ammonium ( ) concentration, leaf apoplastic concentration and pH, and determined the stomatal NH 3 compensation point. Paddy rice (Oryza sativa L. cv. Nipponbare) cultivation using experimental pots was conducted in the open air. Three treatments, no nitrogen (NN), standard nitrogen (SN) and high nitrogen (HN), were prepared for two supplemental fertilizations. Urea with 0, 30 and 60 kg N ha -1 for the NN, SN and HN treatments, respectively, was broadcast at panicle initiation, and urea with 0, 20 and 40 kg N ha -1 for the NN, SN and HN treatments, respectively, was broadcast at heading. The NH 3 exchange fluxes between the rice leaf blades and the atmosphere (SN treatment) measured using a dynamic chamber technique showed net deposition in general; however, net emission from the old leaves occurred 1 day after the application at heading. In contrast, the xylem sap concentrations increased markedly 1 day after both applications, which suggests direct transportation of from the rice roots to the above-ground parts. The applications resulted in no obvious increase in the leaf apoplastic concentrations. The relationship between the concentration in the xylem sap and that in the leaf apoplast was uncertain, although the in the xylem sap came from the roots and the in the apoplast might be affected by the stomatal deposition of NH 3 . The stomatal NH 3 compensation point of rice was estimated to be 0.1-4.1 nmol mol -1 air (20°C). The direction and intensity of the exchange flux through the stomata, interpreted on the basis of the temperature-corrected NH 3 compensation point, agreed with the observed exchange flux between the rice leaf blades and the atmosphere.

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“…However, this is not necessarily so, because the leaf photosynthetic rate of a given species varies with age, nutritional status (19), and techniques used; moreover, the constant a is simply calculated from the measured Jight~ photosynthesis curve. Early papers on rice reported a leaf photosynthetic rate of [10][11][12][13][14][15][16][17][18][19][20] Il1g.dm-a .hr-1 (19, 21); recent papers (1,23) reported a rate of 40-50 mg.dm-a.hr-1 • :'his change could be attributed primarily to improvements in the technique of measur ... lUg the rate. Thus, the constant a in Eq.…”

Section: Discussionmentioning

confidence: 99%