1993 Mineral uptake and transport in xylem and phloem of the proteaceous tree, Banksia prionotes. Plant and Soil , 155–156 , 273 – 276 .Pate JS, Jeschke WD (1993) Mineral uptake and transport in xylem and phloem of the proteaceous tree, Banksia prionotes . Plant Soil 155/156: ...
2) xylem/phloem transport 木质部/韧皮部运输3) xylem and phloem sap 木质部和韧皮部汁液 1. 5μmol/L)or at high Mn2+ supply level(10 μmol/L),the Mn2+ accumulation and Mn2+ translocation rate at both shoots and roots,and the contents of Mn2+ and low-molecular-weight organic acids ...
Xylem sap of proteoid roots, lateral roots, sinker root and age classes of trunk segments, and phloem sap of mid-trunks were collected from trees of Banksia prionotes (Proteaceae) in native habitat on highly impoverished sands in south-western Australia. Proteoid roots were major exporters of ...
This chapter focuses on the long-distance transport of solutes in the xylem and phloem, which plays important roles in shoot nutrition, redistribution of essential elements between tissues during ontogeny, maintenance of charge balance in leaves of nitrate-fed plants, removal of potentially toxic eleme...
4) iron transport in phloem 铁的韧皮部运输 5) postphloem transport 韧皮部后运输 6) xylem and phloem sap 木质部和韧皮部汁液 1. 5μmol/L)or at high Mn2+ supply level(10 μmol/L),the Mn2+ accumulation and Mn2+ translocation rate at both shoots and roots,and the contents of Mn2+ and...
The direction of the long distance transport of solutes in the xylem is governed by transpiration and so takes place from root to shoot. Transport in the reverse direction occurs in a specialised tissue known as phloem (from the Latin word for bark): tog
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C:N ratio of xylem sap remained constant (2.3-2.6) during leaf life; petiole phloem sap C:N ratio varied from 25 to 135 over leaf development. The relationships between net photosynthesis and N import in xylem were: phase 1, 4.8 milligrams C per milligram N; phase 2, 24.7 milligrams C...
Why xylem transport is unidirectional and phloem transport bi-directional. 0 Ans Explain pressure flow hypothesis of translocation of sugars in plants. 0 Ans Describe transpiration pull model of water transport in plants. What are the factors influencing transpiration? How is it useful to plants?
enclosed in a cylinder of cells called the bundle sheath (BS) and contains two principle types of vascular or water-conducting tissue:xylem(X) andphloem(P). Note the many spaces between the cells, especially the spongy mesophyll - these are a ...