Petiole- thin stalk that attaches the leaf to a stem. Stipules- leaf-like structures at the leaf base. Leaf anatomy, shape, margin, and venation (vein formation) are the main features used in plant identification. Leaf Cross Section Showing Tissues and Cells. Evelyn Bailey In leaf anatomy, ...
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...
Leaf photosynthesis is positively correlated with xylem and phloem areas in leaf veins in rice (Oryza sativa) plants. Ann. Bot. 2022, 2022, mcac020. [Google Scholar] [CrossRef] Flexas, J.; Scoffoni, C.; Gago, J.; Sack, L. Leaf mesophyll conductance and leaf hydraulic conductance: An...
vein (vascular bundle) - Veins provide support for the leaf and transport both water and minerals (via xylem) and food energy (via phloem) through the leaf and on to the rest of the plant.Leaf Activities:Leaf Shape BookA short book about leaves to print, with pages on leaf anatomy, a ...
These three viruses are located mainly in phloem tissues of their host plants, although RTBV has also been found in xylem. Eleven geminiviruses are persistently transmitted in a circulative (nonpropagative) manner by cicadellid leafhoppers, whereas one geminivirus [tomato pseudo–curly top virus...
Stem cell fate in the vascular procambium, which generates phloem and xylem tissues, is promoted by the localized expression of WOX4 in both Arabidopsis and tomato (Hirakawa et al., 2010, Ji et al., 2010). Most WUS-clade WOX proteins can compensate for WUS function to different degrees, ...
Functional ratios among leaf, xylem and phloem areas in branches change with shade tolerance, but not with local light conditions, across temperate tree species. New Phytol. 2016, 209, 1566-1575. [CrossRef] [PubMed]Zhang L, Copini P, Weemstra M, Sterck F. 2016. Functional ratios among ...
b) Phloem c) Xylem d) Stomata Gas exchange: In plants, the process of respiration and photosynthesis depends upon oxygen and carbon dioxide, respectively. The plant gets these gases through the atmosphere. This gaseous exchange occurs pores present in the inner s...
The vascular bundle is a structure that is composed of primary xylem and primary phloem, channels for plants to transport water, inorganic salts and organic materials over long distances. Vascular bundles provide structural support, water conduction and photosynthetic carbohydrate transport for plant leave...
(or bundles) and may be components of the xylem and/orphloemor may occur independently of the vascular tissue. Fibers may beseptate, in which they have septa (cross-walls), ornon-septate, in which septa are absent; the presence or absence of septa in fibers can be systematically ...