Thursday, November 5, 2015

Discovery of RATA Makai: Red light absorbance-transmittance through antenna: Discovery of Photosynthesis models

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 Image for RATA Makai, Nav Raj Adhikari, PhD proposed RATA Makai, Green car, No car No food,

There are three kinds of antenna pigment complexes to increase dry matter or grain yield in crops. They are functional, semi-functional and least functional antenna. Functional antenna harvest red photons efficiently and funnels the photons efficiently in the form of excitation energy through resonance to reaction center in thylakoid.  Least functional antenna harvest least red photos and transfers excitation energy to the reaction center with excessive non-photochemical quenching. Intermediate efficiency performing antenna is semi-functional antenna.

Functionality of the antenna has been measured through a measure of ratio of red light absorbance-transmittance through the antenna pigments. Wave length of the red light was of 650 nm which is absorbed by antenna pigments too in addition to  photo system II (PS II) core pigments. The photons absorbed by the antenna pigments migrates to the next pigment complex and finally reach close reaction center (RC) in the form of excitation energy. How efficiently the red photons of red light of 650 nm are absorbed by the antenna, how efficiently the excitation energy passes from the antenna pigments to close RC are measured through the ratio of red light absorbance through antenna to the red light transmittance through the leaf tissue.

The frequency of antenna pigments in the form of frequency of leaf sectors or number of RAT observations out of 1500 observations in different range of the the RAT measures are analyzed using correlation coefficients (r) with grain yield of each of five maize hybrids. Strong positive r producing antenna are functional, strong negative r producing antenna is least functional and very weak negative and weak positive r producing antenna is semi-functional.  So, the model of RATA Makai (red light absorbance-transmittance through antenna) has been proposed by Adhikari et al. (2015). Besides, Makai is the Nepalese vernacular name for 'maize' or 'corn' which is associated to RATA since it is first time discovered in the crop of maize, in the country of Nepal and by the scientists of Nepal. 

To study the model in detail, please go through the following page:

Discovery of RATA Makai    

Discovery of Green car: Discovery of No car-No food model:


Discovery of Diversity model of leaf sectors on Maize leaf

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