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Alternative oxidase (AOX) senses stress levels to coordinate auxin-induced reprogramming from seed germination to somatic embryogenesis- A role relevant for seed vigor prediction and plant robustness

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Title Alternative oxidase (AOX) senses stress levels to coordinate auxin-induced reprogramming from seed germination to somatic embryogenesis- A role relevant for seed vigor prediction and plant robustness
 
Creator Mohanapriya, Gunasekaran
Bharadwaj, Revuru
Noceda, Carlos
Costa, José Hélio
Kumar, Sarma Rajeev
Sathishkumar, Ramalingam
Thiers, Karine Leitão Lima
Macedo, Elisete Santos
Silva, Sofia
Annicchiarico, Paolo
Groot, Steven P.C.
Kodde, Jan
Kumari, Aprajita
Gupta, Kapuganti Jagadis
Arnholdt-Schmitt, Birgit
 
Subject environmental stress
developmental plasticity
metabolic biomarker
endophytes
seed technology
plant performance prediction
 
Description Accepted date: 16 August 2019
Somatic embryogenesis (SE) is the most striking and prominent example of plant plasticity upon severe stress. Inducing immature carrot seeds perform SE as substitute to germination by auxin treatment can be seen as switch between stress levels associated to morphophysiological plasticity. This experimental system is highly powerful to explore stress response factors that mediate the metabolic switch between cell and tissue identities. Developmental plasticity per se is an emerging trait for in vitro systems and crop improvement. It is supposed to underlie multi-stress tolerance. High plasticity can protect plants throughout life cycles against variable abiotic and biotic conditions. We provide proof of concepts for the existing hypothesis that alternative oxidase (AOX) can be relevant for developmental plasticity and be associated to yield stability. Our perspective on AOX as relevant coordinator of cell reprogramming is supported by real-time polymerase chain reaction (PCR) analyses and gross metabolism data from calorespirometry complemented by SHAM-inhibitor studies on primed, elevated partial pressure of oxygen (EPPO)–stressed, and endophyte-treated seeds. In silico studies on public experimental data from diverse species strengthen generality of our insights. Finally, we highlight ready-to-use concepts for plant selection and optimizing in vivo and in vitro propagation that do not require further details on molecular physiology and metabolism. This is demonstrated by applying our research & technology concepts to pea genotypes with differential yield performance in multilocation fields and chickpea types known for differential robustness in the field. By using these concepts and tools appropriately, also other marker candidates than AOX and complex genomics data can be efficiently validated for prebreeding and seed vigor prediction.
 
Date 2019-10-09T10:42:20Z
2019-10-09T10:42:20Z
2019
 
Type Article
 
Identifier Frontiers in Plant Science, 10: 1134
1664-462X
http://223.31.159.10:8080/jspui/handle/123456789/995
https://www.frontiersin.org/articles/10.3389/fpls.2019.01134/full
https://doi.org/10.3389/fpls.2019.01134
 
Language en_US
 
Format application/pdf
 
Publisher Frontiers Media S.A.