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Mishra A, Chakraborty S, Jaiswal TP, Bhattacharjee S, Kesarwani S, Mishra AK, Singh SS. Untangling the adaptive strategies of thermophilic bacterium Anoxybacillus rupiensis TPH1 under low temperature. Extremophiles 2024; 28:31. [PMID: 39020126 DOI: 10.1007/s00792-024-01346-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Accepted: 06/10/2024] [Indexed: 07/19/2024]
Abstract
The present study investigates the low temperature tolerance strategies of thermophilic bacterium Anoxybacillus rupiensis TPH1, which grows optimally at 55 °C , by subjecting it to a temperature down-shift of 10 °C (45 °C) for 4 and 6 h followed by studying its growth, morphophysiological, molecular and proteomic responses. Results suggested that although TPH1 experienced increased growth inhibition, ROS production, protein oxidation and membrane disruption after 4 h of incubation at 45 °C yet maintained its DNA integrity and cellular structure through the increased expression of DNA damage repair and cell envelop synthesizing proteins and also progressively alleviated growth inhibition by 20% within two hours i.e., 6 h, by inducing the expression of antioxidative enzymes, production of unsaturated fatty acids, capsular and released exopolysaccharides and forming biofilm along with chemotaxis proteins. Conclusively, the adaptation of Anoxybacillus rupiensis TPH1 to lower temperature is mainly mediated by the synthesis of large numbers of defense proteins and exopolysaccharide rich biofilm formation.
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Affiliation(s)
- Aditi Mishra
- Laboratory of Cyanobacterial Systematics and Stress Biology, Department of Botany, Banaras Hindu University, Varanasi, India
| | - Sindhunath Chakraborty
- Laboratory of Microbial Genetics, Department of Botany, Banaras Hindu University, Varanasi, India
| | - Tameshwar Prasad Jaiswal
- Laboratory of Cyanobacterial Systematics and Stress Biology, Department of Botany, Banaras Hindu University, Varanasi, India
| | - Samujjal Bhattacharjee
- Laboratory of Microbial Genetics, Department of Botany, Banaras Hindu University, Varanasi, India
| | - Shreya Kesarwani
- Laboratory of Cyanobacterial Systematics and Stress Biology, Department of Botany, Banaras Hindu University, Varanasi, India
| | - Arun Kumar Mishra
- Laboratory of Microbial Genetics, Department of Botany, Banaras Hindu University, Varanasi, India
| | - Satya Shila Singh
- Laboratory of Cyanobacterial Systematics and Stress Biology, Department of Botany, Banaras Hindu University, Varanasi, India.
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Aouz A, Khan I, Chattha MB, Ahmad S, Ali M, Ali I, Ali A, Alqahtani FM, Hashem M, Albishi TS, Qari SH, Chatta MU, Hassan MU. Silicon Induces Heat and Salinity Tolerance in Wheat by Increasing Antioxidant Activities, Photosynthetic Activity, Nutrient Homeostasis, and Osmo-Protectant Synthesis. PLANTS (BASEL, SWITZERLAND) 2023; 12:2606. [PMID: 37514221 PMCID: PMC10385395 DOI: 10.3390/plants12142606] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 07/04/2023] [Accepted: 07/05/2023] [Indexed: 07/30/2023]
Abstract
Modern agriculture is facing the challenges of salinity and heat stresses, which pose a serious threat to crop productivity and global food security. Thus, it is necessary to develop the appropriate measures to minimize the impacts of these serious stresses on field crops. Silicon (Si) is the second most abundant element on earth and has been recognized as an important substance to mitigate the adverse effects of abiotic stresses. Thus, the present study determined the role of Si in mitigating adverse impacts of salinity stress (SS) and heat stress (HS) on wheat crop. This study examined response of different wheat genotypes, namely Akbar-2019, Subhani-2021, and Faisalabad-2008, under different treatments: control, SS (8 dSm-1), HS, SS + HS, control + Si, SS + Si, HS+ Si, and SS + HS+ Si. This study's findings reveal that HS and SS caused a significant decrease in the growth and yield of wheat by increasing electrolyte leakage (EL), malondialdehyde (MDA), and hydrogen peroxide (H2O2) production; sodium (Na+) and chloride (Cl-) accumulation; and decreasing relative water content (RWC), chlorophyll and carotenoid content, total soluble proteins (TSP), and free amino acids (FAA), as well as nutrient uptake (potassium, K; calcium, Ca; and magnesium, Mg). However, Si application offsets the negative effects of both salinity and HS and improved the growth and yield of wheat by increasing chlorophyll and carotenoid contents, RWC, antioxidant activity, TSP, FAA accumulation, and nutrient uptake (Ca, K, and Mg); decreasing EL, electrolyte leakage, MDA, and H2O2; and restricting the uptake of Na+ and Cl-. Thus, the application of Si could be an important approach to improve wheat growth and yield under normal and combined saline and HS conditions by improving plant physiological functioning, antioxidant activities, nutrient homeostasis, and osmolyte accumulation.
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Affiliation(s)
- Ansa Aouz
- Department of Agronomy, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan
| | - Imran Khan
- Department of Agronomy, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan
| | - Muhammad Bilal Chattha
- Department of Agronomy, Faculty of Agriculture Sciences, University of the Punjab, Lahore 54000, Pakistan
| | - Shahbaz Ahmad
- Department of Entomology, Faculty of Agriculture Sciences, University of the Punjab, Lahore 54000, Pakistan
| | - Muqarrab Ali
- Department of Agronomy, Muhammad Nawaz Shareef University of Agriculture, Multan 66000, Pakistan
| | - Iftikhar Ali
- School of Life Sciences & Center of Novel Biomaterials, The Chinese University of Hong Kong, Shatin, Hong Kong
- Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Abid Ali
- Department of Agricultural and Food Sciences, University of Bologna, 40127 Bologna, Italy
| | - Fatmah M Alqahtani
- Department of Biology, College of Science, King Khalid University, Abha 61413, Saudi Arabia
| | - Mohamed Hashem
- Department of Biology, College of Science, King Khalid University, Abha 61413, Saudi Arabia
| | - Tasahil S Albishi
- Biology Department, College of Applied Sciences, Umm Al-Qura University, Makkah 21955, Saudi Arabia
| | - Sameer H Qari
- Department of Biology, Al-Jumum University College, Umm Al-Qura University, Makkah 21955, Saudi Arabia
| | - Muhammad Umer Chatta
- Department of Agronomy, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan
| | - Muhammad Umair Hassan
- Research Center on Ecological Sciences, Jiangxi Agricultural University, Nanchang 330045, China
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Li Y, Liu Y, Jin L, Peng R. Crosstalk between Ca 2+ and Other Regulators Assists Plants in Responding to Abiotic Stress. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11101351. [PMID: 35631776 PMCID: PMC9148064 DOI: 10.3390/plants11101351] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 05/17/2022] [Accepted: 05/18/2022] [Indexed: 05/08/2023]
Abstract
Plants have evolved many strategies for adaptation to extreme environments. Ca2+, acting as an important secondary messenger in plant cells, is a signaling molecule involved in plants' response and adaptation to external stress. In plant cells, almost all kinds of abiotic stresses are able to raise cytosolic Ca2+ levels, and the spatiotemporal distribution of this molecule in distant cells suggests that Ca2+ may be a universal signal regulating different kinds of abiotic stress. Ca2+ is used to sense and transduce various stress signals through its downstream calcium-binding proteins, thereby inducing a series of biochemical reactions to adapt to or resist various stresses. This review summarizes the roles and molecular mechanisms of cytosolic Ca2+ in response to abiotic stresses such as drought, high salinity, ultraviolet light, heavy metals, waterlogging, extreme temperature and wounding. Furthermore, we focused on the crosstalk between Ca2+ and other signaling molecules in plants suffering from extreme environmental stress.
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Bhatla SC, Gogna M, Jain P, Singh N, Mukherjee S, Kalra G. Signaling mechanisms and biochemical pathways regulating pollen-stigma interaction, seed development and seedling growth in sunflower under salt stress. PLANT SIGNALING & BEHAVIOR 2021; 16:1958129. [PMID: 34429013 PMCID: PMC8526035 DOI: 10.1080/15592324.2021.1958129] [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: 06/23/2021] [Revised: 07/14/2021] [Accepted: 07/15/2021] [Indexed: 05/04/2023]
Abstract
Sunflower (Helianthus annuus L.) is one of the major oilseed crops cultivated world over for its high-quality oil rich in linoleic acid. It also has established applications in pharmaceutical and biotechnological industries, mainly through recombinant production of unique oil body (OB) membrane proteins-oleosins, which are used for producing a wide variety of vaccines, food products, cosmetics and nutraceuticals. The present review provides a critical analysis of the progress made in advancing our knowledge in sunflower biology, ranging from mechanisms of pollen-stigma interaction, seed development, physiology of seed germination and seedling growth under salt stress, and finally understanding the signaling routes associated with various biochemical pathways regulating seedling growth. Role of nitric oxide (NO) triggered post-translational modifications (PTMs), discovered in the recent past, have paved way for future research directions leading to further understanding of sunflower developmental physiology. Novel protocols recently developed to monitor temporal and spatial distributions of various biochemicals involved in above-stated developmental events in sunflower, will go a long way for similar applications in plant biology in future.
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Affiliation(s)
| | - Mansi Gogna
- Department of Botany, University of Delhi, Delhi, India
| | - Prachi Jain
- Department of Botany, University of Delhi, Delhi, India
| | - Neha Singh
- Department of Botany, Gargi College, University of Delhi, New Delhi, India
| | - Soumya Mukherjee
- Department of Botany, Jangipur College, University of Kalyani, Jangipur, West Bengal, India
| | - Geetika Kalra
- Department of Botany , Acharya Narendra Dev College, University of Delhi, Kalkaji, New Delhi, India
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