1
|
Banerjee G, Singh D, Sinha AK. Plant cell cycle regulators: Mitogen-activated protein kinase, a new regulating switch? PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2020; 301:110660. [PMID: 33218628 DOI: 10.1016/j.plantsci.2020.110660] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 08/25/2020] [Accepted: 08/31/2020] [Indexed: 06/11/2023]
Abstract
Cell cycle is essential for the maintenance of genetic material and continuity of a species. Its regulation involves a complex interplay between multiple proteins with diverse molecular functions such as the kinases, transcription factors, proteases and phosphatases. Every step of this cycle requires a certain combination of these protein regulators which paves the way for the next stage. It is now evident that plants have their own unique features in the context of cell cycle regulation. Cell cycle in plants is not only necessary for maintenance of its physio-morphological parameter but it also regulates traits important for mankind like grain or fruit size. This makes it even more important to understand how plants regulate its cell cycle amidst various a/biotic stresses it is subjected to during its lifetime. The association of MAPK signaling pathways with every major developmental and stress response pathways in plants raises the question of its potential role in cell cycle regulation. There are number of cell cycle regulating proteins with putative sites for MAPK phosphorylation. The MAPK signaling pathway may directly or in a parallel pathway regulate the plant cell cycle. Unraveling the role of MAPK in cell cycle will open up new arenas to explore.
Collapse
Affiliation(s)
- Gopal Banerjee
- National Institute of Plant Genome Research, Aruna Asaf Ali Road, New Delhi, 110067, India
| | - Dhanraj Singh
- National Institute of Plant Genome Research, Aruna Asaf Ali Road, New Delhi, 110067, India
| | - Alok Krishna Sinha
- National Institute of Plant Genome Research, Aruna Asaf Ali Road, New Delhi, 110067, India.
| |
Collapse
|
2
|
Pena LB, Matayoshi CL, Méndez AAE, Arán M, Moratto CJ, Vázquez-Ramos JM, Gallego SM. Metabolic rearrangements in imbibed maize (Zea mays L) embryos in the presence of oxidative stressors. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 155:560-569. [PMID: 32846391 DOI: 10.1016/j.plaphy.2020.08.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 08/06/2020] [Accepted: 08/13/2020] [Indexed: 06/11/2023]
Abstract
Cadmium (Cd) is a metal known to generate oxidative stress in plants and may be particularly harmful during germination. Herein, the growth and metabolic rearrangements of maize embryo axes subjected during the imbibition stage to Cd ions and other two well-known oxidative stressors, methyl viologen (MV) and hydrogen peroxide (H2O2), were assessed for 48 h. Similar decreases in embryo's length were detected for all stressed axes up to 48 h of imbibition. By this time, treated embryos revealed greater accumulation of reactive oxygen species (ROS) and increased levels of carbonylated and ubiquitinated proteins. The proteolytic activities were intensely enhanced in the treated axes, particularly at 48 h of imbibition, and several antioxidant enzymes were induced in most cases. NMR spectroscopy followed by principal component analysis (PCA) and hierarchical cluster analysis (HCA) showed that a large proportion of polar metabolites, mainly amino acids and organic acids, were decreased under stress conditions, while carbohydrates were increased at 48 h of imbibition, with significant increases in glucose and raffinose for treated embryos relatively to controls. We demonstrated that maize embryo axes were capable of shifting their metabolism to improve their antioxidant defense system, at the expense of their growth. Under these adverse conditions, proteolysis seems to play a key role by providing free amino acids needed for the de novo synthesis of defense-related proteins.
Collapse
Affiliation(s)
- Liliana B Pena
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Química Biológica, Buenos Aires, Argentina; Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Buenos Aires, Argentina
| | - Carolina L Matayoshi
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Química Biológica, Buenos Aires, Argentina
| | - Andrea A E Méndez
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Química Biológica, Buenos Aires, Argentina; Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Buenos Aires, Argentina
| | - Martín Arán
- Laboratorio de Resonancia Magnética Nuclear, Fundación Instituto Leloir, IIBBA-CONICET, Buenos Aires, Argentina
| | - Camila J Moratto
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Química Biológica, Buenos Aires, Argentina
| | - Jorge M Vázquez-Ramos
- Universidad Nacional Autónoma de México, Facultad de Química, Departamento de Bioquímica, México DF, Mexico
| | - Susana M Gallego
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Química Biológica, Buenos Aires, Argentina; Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Buenos Aires, Argentina.
| |
Collapse
|
3
|
Méndez AAE, Mangialavori IC, Cabrera AV, Benavides MP, Vázquez-Ramos JM, Gallego SM. Tyr-nitration in maize CDKA;1 results in lower affinity for ATP binding. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2020; 1868:140479. [PMID: 32599297 DOI: 10.1016/j.bbapap.2020.140479] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 06/17/2020] [Accepted: 06/22/2020] [Indexed: 12/22/2022]
Abstract
Cyclin-dependent kinase A (CDKA) is a key component for cell cycle progression. The catalytic kinase activity depends on the protein's ability to form an active complex with cyclins and on phosphoregulatory mechanisms. Cell cycle arrest and plant growth impairment under abiotic stress have been linked to different molecular processes triggered by increased levels of reactive oxygen and nitrogen species (ROS and RNS). Among these, posttranslational modifications (PTMs) of key proteins such as CDKA;1 may be of significance. Herein, isolated maize embryo axes were subjected to sodium nitroprusside (SNP) as an inductor of nitrosative conditions to evaluate if CDKA;1 protein was a target for RNS. A high degree of protein nitration was detected; this included the specific Tyr-nitration of CDKA;1. Tyr15 and Tyr19, located at the ATP-binding site, were the selective targets for nitration according to both in silico analysis using the predictive software GPS-YNO2, and in vitro mass spectrometry studies of recombinant nitrated ZmCDKA;1. Spectrofluorometric measurements demonstrated a reduction of ZmCDKA;1-NO2 affinity for ATP. From these results, we conclude that Tyr nitration in CDKA;1 could act as an active modulator of cell cycle progression during redox stress.
Collapse
Affiliation(s)
- Andrea A E Méndez
- Universidad de Buenos Aires - Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Química y Fisicoquímica Biológicas "Profesor Alejandro C. Paladini" (IQUIFIB), Facultad de Farmacia y Bioquímica, Buenos Aires, Argentina
| | - Irene C Mangialavori
- Universidad de Buenos Aires - Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Química y Fisicoquímica Biológicas "Profesor Alejandro C. Paladini" (IQUIFIB), Facultad de Farmacia y Bioquímica, Buenos Aires, Argentina
| | - Andrea V Cabrera
- Universidad de Buenos Aires - Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Química y Fisicoquímica Biológicas "Profesor Alejandro C. Paladini" (IQUIFIB), Facultad de Farmacia y Bioquímica, Buenos Aires, Argentina
| | - María P Benavides
- Universidad de Buenos Aires - Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Química y Fisicoquímica Biológicas "Profesor Alejandro C. Paladini" (IQUIFIB), Facultad de Farmacia y Bioquímica, Buenos Aires, Argentina
| | - Jorge M Vázquez-Ramos
- Departamento de Bioquímica, Facultad de Química, Universidad Nacional Autónoma de México, Mexico
| | - Susana M Gallego
- Universidad de Buenos Aires - Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Química y Fisicoquímica Biológicas "Profesor Alejandro C. Paladini" (IQUIFIB), Facultad de Farmacia y Bioquímica, Buenos Aires, Argentina.
| |
Collapse
|