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Functional Plant Biology Functional Plant Biology Society
Plant function and evolutionary biology

Functional Plant Biology

Functional Plant Biology

Functional Plant Biology publishes new and significant information on the functional biology of plants at all scales from the molecular through whole plant to community. Read more about the journalMore

Editor-in-Chief: Sergey Shabala

Publishing Model: Hybrid. Open Access options available.

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These articles are the latest published in the journal. Functional Plant Biology has moved to a continuous publication model. More information is available on our Continuous Publication page.

Published online 23 February 2024

FP23228Introducing the halophyte Salicornia europaea to investigate combined impact of salt and tidal submergence conditions

Angelina Jordine 0009-0001-2121-2454, Julia Retzlaff 0009-0000-2773-0773, Lina Gens, Brigitta Ehrt, Lisa Fürtauer 0000-0001-5248-4105 and Joost T. van Dongen 0000-0001-7944-9289

The extremophile Salicornia europaea is characterised for its tolerance to high salt and flooding conditions. Here, we studied the effect of multiple and simultaneous environmental perturbations of salinity and waterlogging on its growth. Responses to salt and hypoxia reciprocally affected each other when applied simultaneously, demonstrating the significance to investigate signalling-crosstalk between environmental stress reactions in tolerant species.

This article belongs to the Collection Flooding Stress and Hypoxic Responses in Plants.

Published online 23 February 2024

FP23255Differential effects of elevated CO2 on awn and glume metabolism in durum wheat (Triticum durum)

Guillaume Tcherkez 0000-0002-3339-956X, Sinda Ben Mariem, Iván Jauregui, Luis Larraya, Jose M. García-Mina, Angel M. Zamarreño, Andreas Fangmeier and Iker Aranjuelo 0000-0002-8231-5043

The specific impact of elevated CO2 on metabolic pathways in wheat (Triticum spp.) organs other than leaves is poorly documented. We addressed this aspect by taking advantage of a free-air CO2 enrichment experiment in durum wheat (Triticum durum). We found changes in polyamine and cytokinin metabolism under elevated CO2 in glumes and awns but no modifications in final composition at maturity. Elevated CO2 mostly impacts on leaf metabolism but has little effect on glumes and awns.

Published online 23 February 2024

FP23002Meta-analysis of transcriptomic profiles in Dunaliella tertiolecta reveals molecular pathway responses to different abiotic stresses

Bahman Panahi 0000-0001-8523-994X, Mohammad Farhadian, Nahid Hosseinzadeh Gharajeh, Seyyed Abolghasem Mohammadi and Mohammad Amin Hejazi

Cross-talk between photosynthesis, fatty acids, starch and sucrose metabolism under multiple stress conditions were highlighted by network analysis of meta genes in Dunaliella tertiolecta. Coordinated expression of the tetrapyrrole intermediated were observed. Vitamin B6 metabolism, ribosome biogenesis and folate biosynthesis specifically responded to different stress conditions.

Published online 15 February 2024

FP23199Melatonin modulates the tolerance of plants to water stress: morphological response of the molecular mechanism

Minmin He 0009-0006-6023-9285, Gui Geng 0000-0002-2520-7185, Shuyang Mei, Gang Wang, Lihua Yu, Yao Xu and Yuguang Wang 0000-0003-2260-5652

Melatonin, as an exogenous hormone, has been widely used in improving plant stress resistance. This paper systematically describes how melatonin improves the ability of plants to resist water stress (drought and waterlogging) in the processes of photosynthesis, antioxidation and osmosis at the physiological and genetic levels. Melatonin can also improve plant stress resistance with other hormone crosstalk, which has high application value.

Published online 15 February 2024

FP23237Identification and expression analysis of SBP-Box-like (SPL) gene family disclose their contribution to abiotic stress and flower budding in pigeon pea (Cajanus cajan)

Tayyaba Shaheen, Abdul Rehman 0000-0002-2408-0725, Amany H. A. Abeed, Muhammad Waqas, Asad Aslam, Farrukh Azeem 0000-0002-2702-0330, Muhammad Qasim, Muhammad Afzal, Muhammad Farooq Azhar, Kotb A. Attia 0000-0002-2992-1765, Asmaa M. Abushady, Sezai Ercisli and Nazia Nahid 0000-0002-2075-3902

The pigeon pea (Cajanus cajan) is a diploid legume, grown in humid and subtropic regions around the world. The gene family of Squamosa Promoter-binding like Proteins has been studied in different plant species, but is not yet fully explored in pigeon pea. The identified genes were classified into nine groups based on a phylogenetic analysis. Gene expression analysis using RNA sequencing revealed that CcSPL2.1, 3 and 13A were significantly upregulated in salt-tolerant cultivars, which could be further explored.

This article belongs to the Collection Functional Genomics for Developing Climate Resilient Crops.

Published online 13 February 2024

FP23216Understanding the mechanistic basis of plant adaptation to salinity and drought

Muhammad Waseem 0000-0001-7947-7722, Mehtab Muhammad Aslam 0000-0002-0890-4819 and Sunil Kumar Sahu

Environmental constraints like salinity and drought hinder plant growth by affecting plant morphology, physiology, biochemistry, and molecular processes, final crop productivity and threat to global food security. Researches on plant responses to salinity and drought stress is ongoing worldwide. Novel breeding strategies are being adopted due to their short-term impact on agriculture. Given agriculture’s current challenges, we must consider how to effectively transfer laboratory knowledge to the field to mitigate these challenges. This collection discusses plant responses to drought and salinity.

This article belongs to the Collection Understanding the Mechanistic Basis of Plant Adaptation to Salinity and Drought.

Published online 08 February 2024

FP23275Upregulation of TaHSP90A transcripts enhances heat tolerance and increases grain yield in wheat under changing climate conditions

Ali Ammar, Zulfiqar Ali 0000-0003-1228-3338, Muhammad Abu Bakar Saddique, Muhammad Habib-ur-Rahman and Imtiaz Ali

Global ambient mean temperature will rise by approximately 0.3 and 1°C per decade for years 2025 and 2100, respectively. More than 40% of total wheat area in the world is affected by high temperature stress. This study identified that upregulation of TaHSP90A gene in wheat may enhance heat tolerance and increase yield up to 20–30%. Hence, it paves the way to exploit such genes to develop wheat varieties with high yields and better tolerance to heat stress under changing climate conditions.

This article belongs to the Collection Functional Genomics for Developing Climate Resilient Crops.

Published online 08 February 2024

FP23148Perception of strigolactones and the coordinated phytohormonal regulation on rice (Oryza sativa) tillering is affected by endogenous ascorbic acid

Le Yu 0000-0002-8139-3488, Jiankai Zhou, Junlong Lin, Mengwei Chen, Fang Liu, Xinlin Zheng, Liping Zhou, Ruozhong Wang, Langtao Xiao and Yonghai Liu 0000-0002-2741-9800

Strigolactones (SLs) play a role in the suppression of shoot branching. Here, we confirm that the coordinated phytohormonal regulation on rice (Oryza sativa) tillering is affected by endogenous ascorbic acid (Asc). We conclude that Asc or Asc/DHA may affect the coordinated regulation of SL, and the phytohormones indole acetic acid (IAA) and cytokinin (CTK) on rice tillering by regulating the expression of key genes and enzyme concentration in signal transduction, synthesis and transport of these phytohormones.

Published online 08 February 2024

FP23179Mutant crtRB1 gene negates the unfavourable effects of opaque2 gene on germination and seed vigour among shrunken2-based biofortified sweet corn genotypes

Brijesh K. Mehta, Hema S. Chauhan, Sudipta Basu, Anjali Anand, Aanchal Baveja, Rajkumar U. Zunjare, Vignesh Muthusamy, Ashok K. Singh and Firoz Hossain 0000-0001-6662-7752

Seed germination and seedling vigour are the important traits for sweet corn productivity. Here, we analysed the effect of (1) β-carotene hydroxylase1 (crtRB1), (2) opaque2 (o2) and (3) o2 + crtRB1 genes on nutritional quality, germination, seed vigour and physico-biochemical traits in a set of 27 biofortified sh2-based sweet corn inbreds. The o2 + crtRB1-based sweet corn inbreds were found to be the most desirable for nutritional quality, germination and seed vigour over the crtRB1- and o2-based inbreds alone.

Published online 08 February 2024

FP23151The physiology and anatomy study in leaves of Saragolla and Svevo wheat cultivars under polyethylene glycol-simulated drought stress

Ilva Licaj 0000-0003-1759-1006, Chiara Germinario 0000-0003-0912-0503, Maria Chiara Di Meo 0000-0003-4510-6741, Ettore Varricchio 0000-0001-6241-7096 and Mariapina Rocco 0000-0002-5869-029X

Considering global climate change, drought is the major constraint to cultivation of crops including wheat, which is fundamental for staple human and animal nutrition. This situation leads to reduced crop yields and quality, resulting in a huge impact on the economy worldwide. Our objective was to recognise the most effective response strategy to foliar stress in wheat seedlings, using anatomical, morphological and physiological analyses. This information will help devise strategies for making crops resilient to abiotic stress (drought) linked with climate change.

Published online 06 February 2024

FP23256Assembly and comparative analysis of the complete mitochondrial genome of Pinellia ternata

Xiao Liu 0009-0005-8861-2531, Qian You, Mengmeng Liu, Chen Bo, Yanfang Zhu, Yongbo Duan, Jianping Xue, Dexin Wang and Tao Xue

Pinellia ternata is an important natural medicinal plant in China. However studies in P. ternata is largely limited owing to the lack of available genomic information. In this study, we assembled and annotated the mitogenome of P. ternata and performed extensive analyses based on the DNA and amino acid sequences of the annotated genes. Our study makes a significant contribution to the literature because it fills a gap in genomic research on P. ternata and the Araceae family.

Published online 05 February 2024

FP23257Unlocking the potential of biochar in the remediation of soils contaminated with heavy metals for sustainable agriculture

Zubaira Maqbool, Muhammad Shahbaz Farooq 0000-0002-8507-4011, Anum Rafiq, Muhammad Uzair 0000-0001-8329-9762, Muhammad Yousuf, Muhammad Ramzan Khan and Shuhao Huo

This review discusses the benefits of biochar in remediating soils contaminated with heavy metals. Biochar has unique qualities to trap and neutralise heavy metals that adversely affect soil properties. It boosts soil quality by retaining nutrients, increasing microbial activity, and enhancing overall soil fertility. These findings suggest that biochar may be an affordable, and eco-friendly option for remediating soils contaminated with heavy metals to support more sustainable agriculture practices.

This article belongs to the Collection Functional Genomics for Developing Climate Resilient Crops.

Published online 05 February 2024

FP23248Melatonin as a master regulatory hormone for genetic responses to biotic and abiotic stresses in model plant Arabidopsis thaliana: a comprehensive review

Muaz Ameen 0000-0003-1388-2113, Asma Zafar, Athar Mahmood 0000-0003-4473-1668, Muhammad Anjum Zia, Kashif Kamran, Muhammad Mansoor Javaid, Muhammad Yasin and Bilal Ahmad Khan

Melatonin is a natural substance found in plants, animals, and microbes. It is produced in similar ways in microbes and animals, but differently in plants. Scientists have used a plant called Arabidopsis thaliana to study how melatonin helps plants resist both environmental and biological stresses.

This article belongs to the Collection Functional Genomics for Developing Climate Resilient Crops.

Published online 05 February 2024

FP23229Growth, ultrastructural and physiological characteristics of Abelmoschus cytotypes under elevated ozone stress: a study on ploidy-specific responses

Priyanka Singh, Naushad Ansari 0000-0003-0738-9154, Amit Kumar Mishra 0000-0001-6478-6354, Madhoolika Agrawal 0000-0001-9568-9709 and Shashi Bhushan Agrawal 0000-0003-0269-3800

Under elevated ozone (O3) levels, three Abelmoschus cytotypes (Abelmoschus moschatus, monoploid; Abelmoschus esculentus, diploid; Abelmoschus caillei, triploid) showed differential responses. In terms of growth, physiology ultrastructure, foliar protein profile, biomass and yield, the monoploid cytotypes exhibited severe reduction compared to its counterparts having higher ploidy under elevated O3 condition. This study offers crucial data that can be used further to improve plants’ ability to tolerate O3 stress.

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Best Paper Award

Akitomo Kawasaki has been awarded the ASPS-FPB Best Paper Award for 2021.