Role of Organic Solutes on Mineral Stress Tolerance

B-box proteins represent diverse zinc finger transcription factors and regulators forming large families in various plants. A unique domain structure defines them—besides the highly conserved B-box domains, some B-box (BBX) proteins also possess CCT domain and VP motif. Based on the presence of these specific domains, they are mostly classified into five structural groups. The particular members widely differ in structure and fulfill distinct functions in regulating plant growth and development, including seedling photomorphogenesis, the anthocyanins biosynthesis, photoperiodic regulation of flowering, and hormonal pathways. Several BBX proteins are additionally involved in biotic and abiotic stress response. Overexpression of some BBX genes stimulates various stress-related genes and enhanced tolerance to different stresses. Moreover, there is evidence of interplay between B-box and the circadian clock mechanism. This review highlights the role of BBX proteins as a part of a broad regulatory network in crop plants, considering their participation in development, physiology, defense, and environmental constraints. A description is also provided of how various BBX regulators involved in stress tolerance were applied in genetic engineering to obtain stress tolerance in transgenic crops.

Download Full-text

Understanding the role of miRNAs for improvement of tea quality and stress tolerance

Journal of Biotechnology ◽

10.1016/j.jbiotec.2020.12.019 ◽

2021 ◽

Author(s):

Debasish B. Krishnatreya ◽

Niraj Agarwala ◽

Sarvajeet Singh Gill ◽

Tirthankar Bandyopadhyay

Keyword(s):

Stress Tolerance ◽

Tea Quality

Download Full-text

Role of phytosterols in drought stress tolerance in rice

Plant Physiology and Biochemistry ◽

10.1016/j.plaphy.2015.07.014 ◽

2015 ◽

Vol 96 ◽

pp. 83-89 ◽

Cited By ~ 27

Author(s):

M.S. Sujith Kumar ◽

Kishwar Ali ◽

Anil Dahuja ◽

Aruna Tyagi

Keyword(s):

Drought Stress ◽

Stress Tolerance ◽

Drought Stress Tolerance

Download Full-text

Role of Branched-Chain Fatty Acids in pH Stress Tolerance in Listeria monocytogenes

Applied and Environmental Microbiology ◽

10.1128/aem.00865-06 ◽

2006 ◽

Vol 73 (3) ◽

pp. 997-1001 ◽

Cited By ~ 84

Author(s):

Efstathios S. Giotis ◽

David A. McDowell ◽

Ian S. Blair ◽

Brian J. Wilkinson

Keyword(s):

Fatty Acids ◽

Listeria Monocytogenes ◽

Stress Tolerance ◽

Ph Sensitive ◽

Branched Chain Fatty Acids ◽

Alkaline Conditions ◽

Branched Chain ◽

Ph Adaptation ◽

Chain Fatty Acids

ABSTRACT In alkaline conditions, Listeria monocytogenes cells develop higher proportions of branched-chain fatty acids (FAs), including more anteiso forms. In acid conditions, the opposite occurs. Reduced growth of pH-sensitive mutants at adverse pH (5.0/9.0) was alleviated by the addition of 2-methylbutyrate (an anteiso-FA precursor), suggesting that anteiso-FAs are important in adaptation to adverse pH. The balance between anteiso- and iso-FAs may be more important than changes in the amounts and/or degrees of saturation of FAs in pH adaptation.

Download Full-text

Role of 1-acyl-sn-glycerol-3-phosphate acyltransferase in psychrotrophy and stress tolerance of Serratia plymuthica RVH1

Research in Microbiology ◽

10.1016/j.resmic.2014.11.001 ◽

2015 ◽

Vol 166 (1) ◽

pp. 28-37 ◽

Cited By ~ 3

Author(s):

Nurlinawati ◽

Kristof Vanoirbeek ◽

Abram Aertsen ◽

Chris W. Michiels

Keyword(s):

Stress Tolerance ◽

Serratia Plymuthica

Download Full-text

Rotational Diffusion of Organic Solutes in Surfactant−Block Copolymer Micelles: Role of Electrostatic Interactions and Micellar Hydration

The Journal of Physical Chemistry B ◽

10.1021/jp068490q ◽

2007 ◽

Vol 111 (21) ◽

pp. 5878-5884 ◽

Cited By ~ 21

Author(s):

K. S. Mali ◽

G. B. Dutt ◽

T. Mukherjee

Keyword(s):

Block Copolymer ◽

Electrostatic Interactions ◽

Rotational Diffusion ◽

Organic Solutes ◽

Block Copolymer Micelles ◽

Copolymer Micelles

Download Full-text

Studies on Water in Barnacle Muscle Fibres II. Role of ions and Organic Solutes in Swelling of Chemically-skinned Fibres

Journal of Experimental Biology ◽

10.1242/jeb.90.1.43 ◽

1981 ◽

Vol 90 (1) ◽

pp. 43-63

Author(s):

M. E. CLARK ◽

J. A. M. HINKE ◽

M. E. TODD

Keyword(s):

Water Content ◽

Fibre Volume ◽

Tween 20 ◽

Muscle Fibres ◽

Skinned Fibres ◽

Organic Solutes ◽

Net Charge ◽

Trimethylamine Oxide ◽

Organic Solute

Single muscle fibres from the giant barnacle, Balanus nubilis, were chemically skinned (2% Tween 20), then equilibrated for 40 h in salt solutions ranging in ionic strength from 0·025 to 0·6M at pH 7·0. The water content of the fibres and the net charge on the myofilaments increased with increasing salt concentration. Cation accumulation in the fibres was about equal to anion exclusion at all salt concentrations. When an organic solute (trimethylamine oxide, glycine, alanine, serine, proline, or glycerol) in the concentration range from 0·1 to 0·6 M was added to the salt solution, cation accumulation increased and water content decreased. Myofilament architecture was disrupted when the fibres were equilibrated in high salt (> 0·4 M) solutions and preserved when 0·5 M-triethylamine oxide was also added. The results are consistent with the view that organic solutes enhance the association between the fixed charge sites and their counterions. This hypothesis is examined quantitatively using the Oosawa relationship between the volume and the counterion association for cylindrical polyelectrolytes. The results illustrate that organic solutes can influence fibre volume in a way other than through osmo-regulation.

Download Full-text

Plant-Associated Microbial Interactions in the Soil Environment: Role of Endophytes in Imparting Abiotic Stress Tolerance to Crops

Advances in Crop Environment Interaction ◽

10.1007/978-981-13-1861-0_10 ◽

2018 ◽

pp. 245-284 ◽

Cited By ~ 4

Author(s):

Venkadasamy Govindasamy ◽

Priya George ◽

Susheel Kumar Raina ◽

Mahesh Kumar ◽

Jagadish Rane ◽

...

Keyword(s):

Abiotic Stress ◽

Stress Tolerance ◽

Abiotic Stress Tolerance ◽

Microbial Interactions ◽

Soil Environment

Download Full-text

Alternative Pathway is Involved in Nitric Oxide-Enhanced Tolerance to Cadmium Stress in Barley Roots

Plants ◽

10.3390/plants8120557 ◽

2019 ◽

Vol 8 (12) ◽

pp. 557 ◽

Cited By ~ 5

Author(s):

Li He ◽

Xiaomin Wang ◽

Ruijun Feng ◽

Qiang He ◽

Shengwang Wang ◽

...

Keyword(s):

Stress Tolerance ◽

Alternative Pathway ◽

Cadmium Stress ◽

Cd Stress ◽

No Donor ◽

Ros Accumulation ◽

Mda Content ◽

Scavenging Enzymes ◽

Tolerance To Cadmium

Alternative pathway (AP) has been widely accepted to be involved in enhancing tolerance to various environmental stresses. In this study, the role of AP in response to cadmium (Cd) stress in two barley varieties, highland barley (Kunlun14) and barley (Ganpi6), was investigated. Results showed that the malondialdehyde (MDA) content and electrolyte leakage (EL) level under Cd stress increased in two barley varieties. The expressions of alternative oxidase (AOX) genes (mainly AOX1a), AP capacity (Valt), and AOX protein amount were clearly induced more in Kunlun14 under Cd stress, and these parameters were further enhanced by applying sodium nitroprussid (SNP, a NO donor). Moreover, H2O2 and O2− contents were raised in the Cd-treated roots of two barley varieties, but they were markedly relieved by exogenous SNP. However, this mitigating effect was aggravated by salicylhydroxamic acid (SHAM, an AOX inhibitor), suggesting that AP contributes to NO-enhanced Cd stress tolerance. Further study demonstrated that the effect of SHAM application on reactive oxygen species (ROS)-related scavenging enzymes and antioxidants was minimal. These observations showed that AP exerts an indispensable function in NO-enhanced Cd stress tolerance in two barley varieties. AP was mainly responsible for regulating the ROS accumulation to maintain the homeostasis of redox state.

Download Full-text