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Xylem development

Other processes involve an antagonistic action of auxin vs. cytokinin as well. For example, studies with transgenic plants containing genes for enhanced synthesis of either auxin or cytokinin has shown that both apical dominance and xylem development depend on the relative amounts of these hormones [32]. Enhanced auxin increases apical dominance and xylem formation, while enhanced endogenous cytokinin promotes the outgrowth of lateral buds, leading to a more branched plant, and decreased xylem development. [Pg.12]

Schneider B. and Herth W. 1986. Distribution of plasma membrane rosettes and kinetics of cellulose formation in xylem development of higher plants. Protoplasma 131 142-152. [Pg.34]

Jacobs WP, McCready CC (1967) Polar transport of growth regulators in pith and vascular tissues of Coleus stems. Am J Bot 54 1035-1040 Jacobs WP, Morrow IB (1957) A quantitative study of xylem development in the vegetative shoot apex of Coleus. Am J Bot 44 823-842 Jacobs WP, Morrow IB (1967) A quantitative study of sieve tube differentiation in vegetative shoot apices of Coleus. Am J Bot 54 425 31 Jacobs WP, Danielson J, Hurst V, Adams P (1959) What substance normally controls a given biological process II. The relation of auxin to apical dominance. Dev Biol 1 534-554... [Pg.169]

Savidge R A, Wareing P F 1984 Seasonal ambial activity and xylem development in Firms contorta in relation to endogenous indol-3-yl-acetic and (S)-abscisic acid levels. Can J For Res 14 676-682... [Pg.1196]

Yoshimoto K, Noutoshi Y, Hayashi K, Shirasu K, Takahashi T, Motose H (2012a) A chemical biology approach reveals an opposite action between thermospermine and auxin in xylem development in Arabidopsis thaliana. Plant CeU Physiol 53 635-645 Yoshimoto K, Noutoshi Y, Hayashi K, Shirasu K, Takahashi T, Motose H (2012b) Thermospermine suppresses auxin-inducible xylem differentiation in Arabidopsis thaliana. Plant Signal Behav 7 937-939... [Pg.44]

Savidge, R. A. Dihydroconiferyl alcohol in developing xylem of Pinus contorta. Phytochemistry 1987, 26, 93-94. [Pg.418]

This one-directional transport behavior results in a leaf treated with fungicide being protected as a whole. Active substance is transported into the apical region of newly developing leaves however, redistribution into these leaves is limited because the active substance must first be transported downward in the phloem of the treated developed leaf before it can be transported via the xylem to the apical region of the newly developing leaf. For fungicidal compounds like triadimenol and triadimefon, which are predominantly if not exclusively transported in the xylem, this type of transport... [Pg.64]

These examples clearly show that it is not always desirable to develop fully systemic plant protection compounds, i.e. substances which migrate equally well both in the xylem and in the phloem. Transport in the xylem is often sufficient to effectively protect the plant. Due to the physiology of the plant, the storage organs which... [Pg.67]

Martin D., Tholl D., Gershenzon J. and Bohlmann J. (2002) Methyl jasmonate induces traumatic resin ducts, terpenoid resin biosynthesis and terpenoid accumulation in developing xylem of Norway spruce stems. Plant Physiol. 129, 100-1018. [Pg.647]

MENG, H., CAMPBELL, W.H., Substrate profiles and expression of caffeoyl coenzyme A and caffeic acid O-methyltransferases in secondary xylem of aspen during seasonal development, Plant Mol. Biol., 1998, 38, 513-520. [Pg.56]

Because of the appreciable water-wall attraction that can develop both at the top of a xylem vessel and in the numerous interstices of its cell walls, water already present in the lumen of a xylem vessel can be sustained or supported at great heights. The upward force, transmitted to the rest of the solution in the xylem vessel by water-water cohesion, overcomes the gravitational pull downward. The key to sustaining water already present in the xylem vessel against the pull of gravity is the very potent attractive... [Pg.53]

See other pages where Xylem development is mentioned: [Pg.86]    [Pg.107]    [Pg.182]    [Pg.492]    [Pg.499]    [Pg.41]    [Pg.55]    [Pg.212]    [Pg.1185]    [Pg.35]    [Pg.296]    [Pg.301]    [Pg.86]    [Pg.107]    [Pg.182]    [Pg.492]    [Pg.499]    [Pg.41]    [Pg.55]    [Pg.212]    [Pg.1185]    [Pg.35]    [Pg.296]    [Pg.301]    [Pg.47]    [Pg.73]    [Pg.263]    [Pg.139]    [Pg.28]    [Pg.118]    [Pg.49]    [Pg.155]    [Pg.160]    [Pg.162]    [Pg.163]    [Pg.163]    [Pg.233]    [Pg.114]    [Pg.131]    [Pg.97]    [Pg.102]    [Pg.103]    [Pg.105]    [Pg.64]    [Pg.59]    [Pg.1170]    [Pg.285]    [Pg.49]    [Pg.132]    [Pg.131]   
See also in sourсe #XX -- [ Pg.40 ]



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