Abiotic stressors such as extreme temperatures, drought, flood, light, salt, and heavy metals
alter biological diversity and crop production worldwide. Therefore, it is important to know …

Flavonoids are a special category of hydroxylated phenolic compounds having an aromatic
ring structure. Quercetin is aspecial subclass of flavonoid. It is a bioactive natural compound …

Abiotic stresses, such as heat, drought, salinity, low temperature, and heavy metals, inhibit
plant growth and reduce crop productivity. Abiotic stresses are becoming increasingly …

Contents Summary 67 I. Introduction 68 II. Silicon transport in plants: to absorb or not to
absorb 69 III. The role of silicon in plants: not just a matter of semantics 71 IV. Silicon and …

Plants, fungi, and microorganisms are equipped with biosynthesis machinery for producing
thousands of secondary metabolites. These compounds have important functions in nature …

Arable land contamination with nickel (Ni) has become a major threat to worldwide crop
production. Recently, melatonin has appeared as a promising stress-relief substance that …

Numerous studies have shown the beneficial effects of silicon (Si) for plant growth,
particularly under stress conditions, and hence a detailed understanding of the mechanisms …

Aluminum (Al) is the most abundant metal in the earth's crust, but its availability depends on
soil pH. Despite this abundance, Al is not considered an essential element and so far no …

In the era present, due to increasing incidences of a large number of different biotic and
abiotic stresses all over the world, the growth of plants (principal crops) may be restrained by …

Plant phenolics or polyphenols, the aromatic compounds with one or more hydroxyl groups,
are produced by plants mainly for protection against stresses. Phenolics are secondary …