Responses to abiotic and biotic stresses - from the cellular level to fruit development - contributions of the Czech Centre for Experimental Plant Biology DOI Creative Commons
Radomı́ra Vaňková,

L. Burketová,

Břetislav Brzobohatý

et al.

Biologia Plantarum, Journal Year: 2023, Volume and Issue: 67, P. 166 - 174

Published: July 17, 2023

The “Centre for Experimental Plant Biology”, a joint project of the Institute Botany Czech Academy Sciences and CEITEC (represented by Mendel Masaryk Universities), focused on elucidating mechanisms plant responses to abiotic biotic stresses their combinations at cellular level, in intact plants during vegetative reproductive stages, fruit development. consortium demonstrated importance shared research facilities, complementary approaches, knowledge exchange, addressing demanding questions biology. made breakthrough plant-pathogen interactions, including identification of exocyst-syntaxin cooperation non-host resistance. results confirmed fundamental role phytohormones stress responses, negative correlation leaf bioactive gibberellins with drought stress, cytokinins ROS homeostasis, sulphur metabolism, heat volatile emission. Molecular analyses revealed expansin-mediated cell wall remodelling, brassinosteroid-mediated regulation root growth through PIN2, ALBA LARP6C proteins pollen development under impact fertilization rate, embryo seed Gene Set Enrichment RNA-Seq allowed identify crucial genes involved apple scab resistance network. main obtained five-year are summarised here.

Language: Английский

Hormonal responses of rice to organ-targeted cold stress DOI Creative Commons
Jana Jarošová, Sylva Přerostová, Martin Černý

et al.

Environmental and Experimental Botany, Journal Year: 2024, Volume and Issue: 222, P. 105739 - 105739

Published: March 16, 2024

Rice is a plant species sensitive to cold stress, which renders seriously its cultivation. Responses stress (5°C, 24 hours) in whole plants, or targeted rice leaves roots were followed at the hormonome, transcriptome, proteome, and sugar levels, find organ-specific responses processes affected by acclimation. Targeted stresses caused proteomic changes mainly unexposed organs. An increase abscisic acid (ABA) was accompanied decrease jasmonic (JA) (in non-stressed leaves) vice versa (JA increased stressed leaves). Both hormones promote tolerance of plants. In this way, JA could indirectly reduce negative effects on photosynthesis leaves, while ABA dominates (stimulation protective substances, especially dehydrins, control water regime). The cytokinins trans-zeatin dihydrozeatin crowns correlated with stress-induced growth suppression. Leaf-targeted impaired decreased diminishing their transport, an salicylic acid, signal for unloading from phloem into roots. Root-targeted suppressed cytokinin biosynthesis upward promoted accumulation leaves. Acclimation per se activated transcriptome proteome response –ABA, ethylene upregulated, moderately suppressing growth. Pre-acclimated plants showed less profound hormonal than directly positively affecting levels growth-related phytohormones organs (cytokinins leaf-stressed plants; auxins root-stressed plants).

Language: Английский

Citations

10
ABA-induced alterations in cytokinin homeostasis of Triticum aestivum and Triticum spelta under heat stress DOI Creative Commons
I.V. Kosakivska, L.V. Voytenko, V.A. Vasyuk

et al.

Plant Stress, Journal Year: 2024, Volume and Issue: 11, P. 100353 - 100353

Published: Jan. 15, 2024

We conducted an investigation to explore the effects of priming with ABA solution (10−6M) on growth and endogenous cytokinin homeostasis in two related wheat species Triticum aestivum T. spelta under heat stress. Fourteen-day-old plants seeds soaked water (C-plants) or (ABA+ plants) were subjected a stress treatment (2 hours at 40°C), subsequently allowed recover until 21st day. During stress, shoot biomass ABA+ from 'Podolyanka' winter variety decreased, while root 'Frankenkorn' spelt increased. After recovery, exhibited lower compared C- plants, surpassed control. Following total content shoots roots 14-day-old increased by 76.8% 313.3%, respectively. Trans-zeatin-O-glucoside isopentenyladenine accumulated shoots, their being 2.8 2.6 times higher, respectively, than non-stressed plants. In roots, levels trans-zeatin increased, exceeding values 23.3 times, Upon resumption normal temperature conditions, 21-day-old was higher that (409.5±20.5 ng·g−1 FW) (542.0±27.1 FW). However, accumulation recovered did not reach observed (458.7±22.9 FW), but equaled those C-plants (364.4±18.2 induced 53.6% decrease increase 6.4%. stressed 39.2 all other forms decreased. amount trace 60.3±3.2 182.5±9.1 FW, isopentenyladenosine 13.4 times. recovery day 2.1 C-plants, Overall, resulted differential changes between Exogenous spelt, high caused content. prolonged effect manifested levels, both declined wheat. The ABA-induced alterations helped alleviate negative impact provided insight into interplay these phytohormones shaping plant's response

Language: Английский

Citations

5
How Rice Responds to Temperature Changes and Defeats Heat Stress DOI Creative Commons
Yufeng Xing, Hongyu Lu,

Xinxing Zhu

et al.

Rice, Journal Year: 2024, Volume and Issue: 17(1)

Published: Nov. 29, 2024

With the intensification of greenhouse effect, a series natural phenomena, such as global warming, are gradually recognized; when ambient temperature increases to extent that it causes heat stress in plants, agricultural production will inevitably be affected. Therefore, several issues associated with crops urgently need solved. Rice is one momentous food for humans, widely planted tropical and subtropical monsoon regions. It prone high summer, leading decrease yield quality. Understanding how rice can tolerate through genetic effects particularly vital. This article reviews respond rising by integrating molecular regulatory pathways introduce its physiological mechanisms tolerance from perspective biology. In addition, genome selection engineering were emphasized provide theoretical basis sustainability stability crop yield-quality structures under temperatures point view breeding.

Language: Английский

Citations

4
Adaptive Responses of Secale cereale to Temperature Stresses: Role of Cytokinins, Lipoxygenase, and Secondary Metabolites DOI
I.V. Kosakivska, Л. М. Бабенко, Н.П. Веденичева

et al.

Published: Jan. 1, 2025

Language: Английский

Citations

0
Biosynthesis, Signaling, Homeostasis, Transport, and Regulatory Mechanisms of Cytokinin in Rice and Arabidopsis Response to Heat Stress DOI
Md. Atik Mas-ud, Sadiya Arefin Juthee, Md. Rayhan Chowdhury

et al.

Journal of Plant Growth Regulation, Journal Year: 2025, Volume and Issue: unknown

Published: May 19, 2025

Language: Английский

Citations

0
Cytokinin elevation caused by high light intensity contributes substantially to the increase of thermotolerance of rice plants DOI Creative Commons
Sylva Přerostová, Jana Jarošová, Petre I. Dobrev

et al.

Plant Stress, Journal Year: 2025, Volume and Issue: unknown, P. 100904 - 100904

Published: May 1, 2025

Language: Английский

Citations

0
Alternate wetting and drying irrigation at tillering stage enhances the heat tolerance of rice by increasing sucrose and cytokinin content in panicles DOI Creative Commons
Tieren Gao,

K. J. Xie,

Qiuqian Hu

et al.

Frontiers in Plant Science, Journal Year: 2025, Volume and Issue: 16

Published: May 29, 2025

High temperature events have occurred frequently in recent years under global warming conditions. during panicle initiation (PI) poses significant negative impacts on rice grain yield. Alternate wetting and drying irrigation (AWD) is widely adopted cultivation. Here, to investigate the alleviating effect of AWD heat damage ( Oryza sativa L.), we selected four varieties with different high-temperature resistance (Liangyoupeijiu, IR64, Huanghuazhan, Shanyou 63), two treatments at tillering stage including continuous flooding (CF) PI (high daytime temperature, HDT; control CK) were applied. HDT significantly reduced yield all except for 63, primarily by decreasing spikelet fertility number, while improved traits HDT. Moreover, photosynthetic rate, increased starch content leaves stems, decreased transport sucrose panicles. promoted synthesis leaves, hydrolase activity panicles also abscisic acid that cytokinins (CTKs), indole-3-acetic (IAA), gibberellins (GAs) CF. expression CTK biosynthesis genes IPT , CYP735A LOG ) degradation gene CKX roots HDT, enhanced xylem sap flow rate contents CTKs, IAA, GAs Furthermore, exhibited a more pronounced heat-sensitive than heat-tolerant varieties. In summary, leads lower higher content, level panicles, which together enhance tolerance stage, therefore sustainable feasible strategy mitigate heat-induced loss rice.

Language: Английский

Citations

0
The role of cis -zeatin in enhancing high-temperature resistance and fucoxanthin biosynthesis in Phaeodactylum tricornutum DOI

Sizhe Fan,

Yixuan Li, Qi Wang

et al.

Applied and Environmental Microbiology, Journal Year: 2024, Volume and Issue: 90(6)

Published: May 24, 2024

a prominent source of industrial fucoxanthin production, faces challenges in its application due to tolerance high-temperature environments. This study investigates the physiological responses

Language: Английский

Citations

2
Responses to abiotic and biotic stresses - from the cellular level to fruit development - contributions of the Czech Centre for Experimental Plant Biology DOI Creative Commons
Radomı́ra Vaňková,

L. Burketová,

Břetislav Brzobohatý

et al.

Biologia Plantarum, Journal Year: 2023, Volume and Issue: 67, P. 166 - 174

Published: July 17, 2023

The “Centre for Experimental Plant Biology”, a joint project of the Institute Botany Czech Academy Sciences and CEITEC (represented by Mendel Masaryk Universities), focused on elucidating mechanisms plant responses to abiotic biotic stresses their combinations at cellular level, in intact plants during vegetative reproductive stages, fruit development. consortium demonstrated importance shared research facilities, complementary approaches, knowledge exchange, addressing demanding questions biology. made breakthrough plant-pathogen interactions, including identification of exocyst-syntaxin cooperation non-host resistance. results confirmed fundamental role phytohormones stress responses, negative correlation leaf bioactive gibberellins with drought stress, cytokinins ROS homeostasis, sulphur metabolism, heat volatile emission. Molecular analyses revealed expansin-mediated cell wall remodelling, brassinosteroid-mediated regulation root growth through PIN2, ALBA LARP6C proteins pollen development under impact fertilization rate, embryo seed Gene Set Enrichment RNA-Seq allowed identify crucial genes involved apple scab resistance network. main obtained five-year are summarised here.

Language: Английский

Citations

1