Mineral Nutrition: Vacuoles and Tonoplasts

Clarkson, David T.; Lüttge, Ulrich

doi:10.1007/978-3-642-69985-6_5

Cited by 2 publications

(2 citation statements)

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“…The initial hypothesis examined in the present study, that the xylem sap cytokinin levels are related to nutrient uptake, has not been confirmed for all the nutrients. It is well known that total amounts and concentrations of the plant nutrient levels are governed by the needs of the plant growth and development and that mineral uptake of the roots, as well as nutrient translocation and compartmentalization may be involved in the manifestation of varietal differences [12,24]. As is seems in Table I, the close behaviour of the rootstocks in the same group may be attributed rather to the nutrient uptake in veraison stage.…”

Section: Discussionmentioning

confidence: 99%

Effects of various rootstocks on xylem exudates cytokinin content, nutrient uptake and growth patterns of grapevine Vitis vinifera L. cv. Thompson seedless

2000

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Variations in cytokinins, mineral nutrient elements of xylem exudates collected before bud burst, petiole and blade nutrient concentration at veraison, and shoot growth patterns were studied as affected by the rootstock. A two year experiment was conducted on field grown grapevines cv. Thompson seedless, grafted onto 420AMgt, 110Richter, 99Richter, 41BMgt, Kober 5BB, 8B Teleki, 1103 Paulsen, 31 Richter and 3309C rootstocks. Xylem exudate cytokinins were positively correlated with relative bud burst number, shoot elongation in the early season, and shoot elongation at veraison stage. A strong positive relationship between cytokinin content and total nitrogen was also found. The rootstocks 420AMgt, 110Richter, and 99Richter, which showed high levels in cytokinin content also had high nitrogen levels in xylem exudates and leaf blade. Multivariate Analysis allowed to show that rootstocks with similar levels in cytokinin concentrations in xylem exudates, also presented a closely similar behaviour in nutrient uptake. Grapevine / rootstock / xylem sap / cytokinin / mineral uptake Résumé-Étude de l'effet de différents porte-greffes sur la concentration en cytokinines dans les pleurs du bois, l'absorption minérale et les caractéristiques de croissance de la vigne Vitis vinifera cv. Sultanine. Les variations de la teneur en cytokinines et en éléments minéraux des exudats du xylème récoltés avant le débourrement, de la compositions minérale du limbe et du pétiole à la véraison, et de la croissance des rameaux ont été étudiées en fonction du porte-greffe. Les essais ont été réalisés au champ sur la variété Sultanine greffée sur les porte-greffes 420A Mgt, 110Richter, 41B Mgt, Kober 5BB, Teleki 8B, 1103 Paulsen, 31Richter, et 3309 Couderc. La concentration en cytokinines dans les exudats du xylème a été positivement corrélée avec le nombre relatif de bourgeons débourrés et avec l'allongement des rameaux au début de la période végétative et à la véraison. Une corrélation élevée entre la concentration en cytokinines et la teneur en azote totale a également été mise en évidence. Les porte-greffe 420A Mgt,

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Section: Discussionmentioning

confidence: 99%

Effects of various rootstocks on xylem exudates cytokinin content, nutrient uptake and growth patterns of grapevine Vitis vinifera L. cv. Thompson seedless

2000

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“…The role(s) of vacuoles have been discussed many times from many points of view (e.g. Matile, 1974Matile, , 1978Matile, , 1984Matile, , 1987Matile & Wiemken, 1976;MacRobbie, 1979;Marty, Branton & Leigh, 1980;Lott, 1980;Wagner, 1982;Conn, 1984;Baudet, Alibert & Marigo, 1984;Clarkson & Luttge, 1984;Raven 1984aRaven , 1987aN. Harris, 1986;Boiler & Wiemken, 1986).…”

Section: Introductionmentioning

confidence: 99%

The Role of Vacuoles

Raven¹

1987

New Phytol

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Mineral Nutrition: Vacuoles and Tonoplasts

Cited by 2 publications

References 84 publications

Effects of various rootstocks on xylem exudates cytokinin content, nutrient uptake and growth patterns of grapevine Vitis vinifera L. cv. Thompson seedless

Effects of various rootstocks on xylem exudates cytokinin content, nutrient uptake and growth patterns of grapevine Vitis vinifera L. cv. Thompson seedless

The Role of Vacuoles

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