phloem

thumb|upright=1.2|Phloem (orange) transports products of photosynthesis to various parts of the plant.|alt= thumb|Cross-section of a flax plant stem:

AI overview

Phloem is a tissue in plants that transports sugars and other products made during photosynthesis from the leaves to the rest of the plant. This distribution of nutrients is essential for plants to grow and survive, allowing them to use the energy they've captured from sunlight throughout their entire structure.

AI-generated from the Wikipedia summary — may contain errors.

Research

8,333 papers

Phloem development.ReviewThe New phytologist · 2023Hardtke CSDOI: 10.1111/nph.19003
The Phloem as an Arena for Plant Pathogens.ReviewAnnual review of phytopathology · 2022Lewis JD, Knoblauch M, Turgeon RDOI: 10.1146/annurev-phyto-020620-100946
Phloem networks in leaves.ReviewCurrent opinion in plant biology · 2018Carvalho MR, Losada JM, Niklas KJDOI: 10.1016/j.pbi.2017.12.007
Phloem: At the center of action in plant defense against aphids.ReviewJournal of plant physiology · 2022Twayana M, Girija AM, Mohan V et al.DOI: 10.1016/j.jplph.2022.153695
Mechanisms of phloem loading.ReviewCurrent opinion in plant biology · 2018Zhang C, Turgeon RDOI: 10.1016/j.pbi.2018.01.009
Control of phloem unloading and root development.ReviewJournal of plant physiology · 2024Liu Z, Ruonala R, Helariutta YDOI: 10.1016/j.jplph.2024.154203
Phloem function and development-biophysics meets genetics.ReviewCurrent opinion in plant biology · 2018Anne P, Hardtke CSDOI: 10.1016/j.pbi.2017.12.005
Phloem anatomy and function as shaped by the cell wall.ReviewJournal of plant physiology · 2021McCubbin TJ, Braun DMDOI: 10.1016/j.jplph.2021.153526

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Wikidata facts

Image: Phloem.jpg

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Commons gallery: Phloem
Commons category: Phloem

Sources (4)

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~11 min read

Article

15 sections

Contents

Structure
Conducting cells (sieve elements)
Parenchyma cells
Companion cells
Albuminous cells
Supportive cells
Fibres
Sclereids
Function
Girdling
Origin
Nutritional use
See also
References
External links

thumb|upright=1.2|Phloem (orange) transports products of photosynthesis to various parts of the plant.|alt= thumb|Cross-section of a flax plant stem:

Phloem (, ) is the living tissue in vascular plants that transports the soluble organic compounds made during photosynthesis and known as photosynthates, in particular the sugar sucrose, to the rest of the plant. This transport process is called translocation. In trees, the phloem is the innermost layer of the bark, hence the name, derived from the Ancient Greek word (phloiós), meaning "bark". The term was introduced by Carl Nägeli in 1858. Different types of phloem can be distinguished. The early phloem formed in the growth apices is called protophloem. Protophloem eventually becomes obliterated once it connects to the durable phloem in mature organs, the metaphloem. Further, secondary phloem is formed during the thickening of stem structures.