Chlorophyll Fluorescence in Plant Biology

By A. N. Misra, M. Misra, Ranjeet Singh. 2012

123 citations recorded by the source corpus.

Several molecules absorb light energy which they emit after a time difference (lifetime) as radiation energy. Molecules remain at a low energy level or the ground electronic singlet state (So) or the lowest vibrational level at room temperature (Noomnarm and Clegg, 2009). On absorption of a photon, the molecule is excited from So to the first electronic excited singlet state S1 within < 10-15 s-1 (Figure 1). These molecules can also be transferred to higher energy levels (S2 to Sn) also. These excited state molecules can relax to the S1 electronic state via vibrational relaxation within 10-12 s-1. The molecule will ultimately relax to the So state through photon emission, which is called fluorescence emission. Also here, the energy of the emitted photon must equal the changes in the energy levels.

Subfields: Molecular Biology, Plant Science

View Paper: https://www.semanticscholar.org/paper/86baeb03bff519800a112accc5df578116145291

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Molecular Biology

1. Marian Brestic
2. J. Masojídek
3. G. Torzillo
4. M. Živčák
5. D. E. Rao
6. K. Chaitanya

In Plant Science

1. Marian Brestic
2. M. Živčák
3. D. E. Rao
4. G. Torzillo
5. K. Chaitanya
6. J. Masojídek

Citations in the corpus

• Photosynthesis and antioxidative defense mechanisms in deciphering drought stress tolerance of crop plants (2016, background): “Photosystem (PS) II plays a key role in photosynthetic response to drought stress (Misra et al. 2012).”
• PSII Fluorescence Techniques for Measurement of Drought and High Temperature Stress Signal in Crop Plants: Protocols and Applications (2013, background): “The Fm 0 level is lower than Fm, as the acceptor side of PS II is partly reduced and the non-photochemical quenching occurs (Stirbet and Govindjee 2011; Misra et al. 2012).”
• Variables Governing Photosynthesis and Growth in Microalgae Mass Cultures (2021, background): “NPQ arises from a number of processes in the thylakoid membranes, and several major components of NPQ can be identified based on the kinetic curves of the relaxation of PSII fluorescence [198].”