Involvement of kinetin and spermidine in controlling salinity stress in mulberry (Morus alba L. cv. S1)

Abstract

In mulberry (Morus alba L.) plants NaCI stress imposed through roots by irrigation during growth period decreased the net photosynthetic rate (NPR), physiological water use efficiency (pWUE), which ultimately reflected on the reduction of growth parameters and leaf yield. Foliar spray of kinetin and spermidine ~both at 1 raM) on salinized plants reduced the detrimental effects of saline stress. Kinetin and spermidine sprayed plants increased the total chlorophyll, protein content, as well as leaf yield, but reduced the sugar and proline contents as compared to NaCI treated plants. Kinetin was more effective than spermidine in increasing NPR, pWUE and leaf yield both in nonsalinized and salinized condition.

Effects of amino acids on the growth and flowering of Eustoma grandiflorum under autotoxicity in closed hydroponic culture

“…Primary metabolites where N is the main component, such as amino acids, the building blocks in the synthesis of proteins, are involved in plant growth and development (Hounsome et al, 2008). Foliar application of amino acids increased the protein content in mulberry plants (Das et al, 2002). However, among the twenty three amino acids Ala, and Ser showed negative effects on the Eustoma seedlings by decreasing the leaf size and numbers.…”

Effects of salinity and benzyl adenine on development and function of microhairs of Zea mays L

“…Spraying with BA increased the area of leaves: for leaf 11 there was a gain of about 40% compared with an unsprayed leaf in 80 mM NaCl. BA does retard senescence of detached rice leaves (Yeh and Kao 1994) and spraying maize plants with kinetin does counteract effects of salinity El-Shihaby et al 2002;Khan and Srivastava 1998;Younis et al 2003) as is the case with wheat (Gadallah 1999) and mulberry (Das et al 2002), but not with rice (Yokoyama et al 2002).…”

The effectiveness of foliar applications of synthesized zinc-amino acid chelates in comparison with zinc sulfate to increase yield and grain nutritional quality of wheat

“…In addition, several studies showed that foliar application of AA increased plant protein content. For example, Das et al (2002) reported that foliar spray of mulberry plants with AA increased the protein contents as well as leaf yield as compared with the control plant. The positive increment in plant protein content due to AA application has also been recorded by Chang et al (2005).…”