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Essay On Boron

1653 Words7 Pages

Boron Deficiency symptoms in Plants Madne Manjushri, A.A.Naik. Department of Botany Savitribai Phule Pune University

Abstract:
Boron is an essential element for the growth and development of vascular plants, and adequate B nutrition is crucial for crop production. Boron is a key element present in plants. Uptake of boron in plants through root from soil in form of borate. Boric acid is then absorbed by plant and transport through the channel BOR1 and NIP5:1. Absorption of boron depends on some soil and non soil factors. Boron plays important role cell wall synthesis, nucleic acid and carbohydrate metabolism, and several metabolite pathways. Boron concentration in plants leads to toxic levels. Toxicity occurs related to acidic or alkaline soil or low rainfall conditions. Under B deficient conditions expression of NIP5:1 and BOR1 both unregulated by different mechanisms. Both are unregulated …show more content…

B involed in indole acetic acid metabolism, protein and carbohydrate metabolism.

Factors affecting absorption of boron:
Their are many factors which affects boron absorption they may be soil factors or non soil factor such as:
a) pH: pH is a most significant soil factor which affect the absorption of boron. (Gupta, 1979).I n general, when soil pH increase their is decrease in boron absorption this is due to two reasons. Firstly ,below pH7 boric acid predominates and since resemblance of soil clay is low,so amount of B assimilation is low. As pH increases concentration of boric acid increases because of strong resemblance of soil clay is high, so amount of B absorption increases. (Keren and Bingham, 1985). In other words, B accessibility to root decreases, with the increase in soil pH.
b)

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