Additional notes on the taxonomy of Parakeelya Hershk. (Montiaceae) DOI Creative Commons
Mark Hershkovitz

Опубликована: Сен. 30, 2023

Parakeelya Hershk. (Montiaceae) has become the name conserved over older Rumicastrum Ulb. for a lineage of Australian plants historically classified in Calandrinia Kunth. In Candollean taxonomy persistent to late 20th Century, were large, heterogeneous, and polyphyletic circumscription Calandrinia, later referred by designation “Calandrinia s. l.” Following cladistic dissection, “s. str.” was restricted small, homogeneous, well-supported clade American plants. The formerly monotypic poorly studied genus Ulb., Parakeelya, which specifically excluded latter. specialists, however, eschewed both these names continued classify existing new species as Calandrinia. However, they never justified this usage on taxonomic evidence. some cases, used though it applied exclusively plants, explained why does or not pertain lineage. Phylogenetics researchers appropriated refer plus str., predicated disprove its monophyly, supported first place. They demonstrated that indeed pertains lineage, but proposed nomenclatural conservation Parakeelya. Yet, numerous subsequent publications, use describe present work, I demonstrate application str. conceptually illegitimate, because are conceptual homonyms taxa had been applied. discuss evidence deliberate with objective preventing correct from being accepted includes is limited earlier-reported irregularities authors’ proposal conserve including considerable factually incorrect otherwise misleading information biased favor approved conservation. terms equivalence scientific assertions, be erroneous, incidentally deliberately so.

Язык: Английский

Correlation between aboveground vegetation composition and soil seed bank of Raudhat desert habitat: a case study of Raudhat Alkhafs, Saudi Arabia DOI Creative Commons

Asma A. Al-Huqail,

Hanan F. Al-Harbi,

Abdullah M. Alowaifeer

и другие.

BMC Plant Biology, Год журнала: 2025, Номер 25(1)

Опубликована: Фев. 1, 2025

Plant diversity in arid environments is very important for ecosystem function and services. Raudhat habitat among the most ecosystems regions which characterized by its rich biodiversity specific environmental conditions. The present study aims to characterize plant communities soil seed banks of Alkhafs, northeast Riyadh City, Saudi Arabia. Vegetation composition was analyzed during winter-spring summer-fall seasons. Soil samples were collected from each site bank analysis through seedling emergence techniques chemical physical analyses. Eighty-three species recorded (50.6% perennial 49.4% annual plants). Among 30 families, Asteraceae, Poaceae, Brassicaceae, Boraginaceae, Fabaceae frequent (50.6%). Therophytes are distinguished as major (45.8%) because their ability tolerate environments, high reproduction rate, ecological flexibility, genetic plasticity. showed three season dominated Plantago ciliata, Calotropis procera, Heliotropium ramosissimum, while season, procera one community, two other ramosissimum. During ramosissimum community revealed highest richness (Simpson index = 0.92) evenness (Shannon-evenness 0.83). These variations seasons can be ascribed climatic For identified significant salinity, texture, water holding capacity, H2CO3, K, Na contents. However, Cl, Mg Regarding bank, 22 samples, mainly annuals. density ranged 156 1339 seeds/m2. Trigonella stellata Forssk. attained number seeds (1628 seeds/m2), followed ciliata (1000 seeds/m2) Poa annua (889 seeds/m2). About 45% not earlier Alkhafs. low correlation between aboveground vegetation northern part studied region degradation could due overgrazing anthropogenic activities. Based on obtained results, sites AlKhafs-North need immediate restoration rehabilitation conserve this site.

Язык: Английский

Процитировано

2
Synthetic crassulacean acid metabolism (SynCAM) for improving water-use efficiency in plants DOI
Sung Don Lim, J Lomas, Monirul Islam

и другие.

Philosophical Transactions of the Royal Society B Biological Sciences, Год журнала: 2025, Номер 380(1927)

Опубликована: Май 29, 2025

The global climate crisis will continue to increase the frequency and duration of drought episodes in agricultural production areas worldwide. Hot dry conditions create greater water-deficit stresses on crops, lowering their productivity. While multiple engineering strategies have been developed improve efficiency photosynthesis, efforts are needed attenuation water-use crops. Crassulacean acid metabolism (CAM) is a naturally occurring elaboration C 3 photosynthesis that allows plants occupy thrive hot environments with limited or intermittent water supply. Creating synthetic versions bioengineered CAM one potentially fruitful approach improving crop productivity while also reducing photorespiration increasing efficiency. We outline current being undertaken engineer CAM-like (SynCAM) future advances might contribute optimization SynCAM This article part theme issue ‘Crops under stress: can we mitigate impacts change agriculture launch ‘Resilience Revolution’?’.

Язык: Английский

Процитировано

1
The promise of resurrection plants in enhancing crop tolerance to water scarcity DOI Creative Commons

Shumayla,

Gerardo Alejo‐Jacuinde,

Pablo Silva-Villatoro

и другие.

Philosophical Transactions of the Royal Society B Biological Sciences, Год журнала: 2025, Номер 380(1927)

Опубликована: Май 29, 2025

Climate change affects the agricultural sector by modifying precipitation patterns, increasing extreme weather events, and geographically shifting agriculturally viable areas. These climate alterations substantially impact plant resilience to abiotic stress and, consequently, productivity. A better understanding of adaptations tolerate environmental conditions could pave way for future advances in sustainability. One such adaptation is vegetative desiccation tolerance (VDT), which enables some species, known as ‘resurrection plants’, undergo almost complete drying without losing viability. The current review discusses how incorporating different molecular biochemical mechanisms underlying VDT into crops might expand time during can continue growing under limiting water perhaps broaden range survivable negative potentials that a crop endure drought stress. Such possibilities alleviate detrimental consequences low availability crops. Understanding plants survive dehydration has potential enlighten new strategies improve resiliency crops, thereby positively impacting worldwide food security This article part theme issue ‘Crops stress: we mitigate impacts on agriculture launch ‘Resilience Revolution’?’.

Язык: Английский

Процитировано

1
The GDSL lipase CpGLIP1 from Chimonanthus praecox improves drought and cold tolerance in Arabidopsis and poplar DOI
Daofeng Liu, Xiaoyan Zhao, Yuhong Liu

и другие.

Industrial Crops and Products, Год журнала: 2024, Номер 215, С. 118636 - 118636

Опубликована: Май 3, 2024

Язык: Английский

Процитировано

5
A wearable and breathable sensor based on gradient porous electrodes for real-time leaf moisture monitoring DOI
Yuanyuan Huang,

Mingfu Xiao,

Xiaoqi Zhou

и другие.

Sensors and Actuators B Chemical, Год журнала: 2025, Номер unknown, С. 137461 - 137461

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

0
Contrasting water, dry matter and air contents distinguish orthophylls, sclerophylls and succophylls (leaf succulents) DOI Creative Commons
Byron B. Lamont,

Heather C. Lamont

Oecologia, Год журнала: 2025, Номер 207(4)

Опубликована: Март 20, 2025

Differences in leaf texture (hardness, thickness) distinguish orthophylls (soft leaves), sclerophylls (hard leaves) and (semi)succophylls (water-storing leaves). Texture is controlled by dry matter, water air contents. Our aim was to a) identify the best index of succulence, b) assess how these three components vary with type, c) derive bounds for properties among four main leaf-texture classes. Eight contrasting species from Namib Desert, South Africa were assessed their area (A), thickness (z), mass (D), saturated content (Q), relative volume various indices texture. Q/A (= QV•z), where QV storage per unit z an ideal succulence. Specific (SLA) more suitable as hardness (SLA-1 = D/A) but only non-succulents. Rising specific gravity sclero-orthophylls due replacement matter succophylls. Collation 13 worldwide studies showed that can be distinguished a ≤ 0.45 mg mm-2 surface succophylls ≥ 0.9, such there divergent relationship plants regarding water-storing properties. Semi-succophylls defined having > < separated SLA 10 mm2 mg-1 mass. The distribution classes may greatly within, especially between, local floras.

Язык: Английский

Процитировано

0
Exogenous Sodium and Calcium Alleviate Drought Stress by Promoting the Succulence of Suaeda salsa DOI Creative Commons
Dong Zhang, Changyan Tian,

Wenxuan Mai

и другие.

Plants, Год журнала: 2024, Номер 13(5), С. 721 - 721

Опубликована: Март 4, 2024

Succulence is a key trait involved in the response of Suaeda salsa to salt stress. However, few studies have investigated effects interaction between and drought stress on S. growth succulence. In this study, morphology physiology were examined under different ions (Na+, Ca2+, Mg2+, Cl−, SO42−) simulated conditions using polyethylene glycol concentrations (PEG; 0%, 5%, 10%, 15%). The results demonstrate that Na+ Ca2+ significantly increased leaf succulence by increasing water content enlarging epidermal cell size compared SO42−. Under (PEG) stress, with an increase biomass, degree succulence, decreased non-salt treatment. treatment, indicated could reduce due stimulating salsa. addition, promoted activity superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), which oxidative conclusion, are main factors promoting can effectively alleviate

Язык: Английский

Процитировано

3
Evaluation of succulent plants Echeveria elegans as a biomonitor of heavy metals and radionuclides DOI
Huemantzin Balan Ortiz-Oliveros,

M. M. Mendoza-Guzmán,

G. Zarazúa

и другие.

Environmental Research, Год журнала: 2024, Номер 251, С. 118611 - 118611

Опубликована: Март 5, 2024

Язык: Английский

Процитировано

1
Crassulacean acid metabolism (CAM) at the crossroads: a special issue to honour 50 years of CAM research by Klaus Winter DOI Open Access
Rowan F. Sage, Erika J. Edwards, Karolina Heyduk

и другие.

Annals of Botany, Год журнала: 2023, Номер unknown

Опубликована: Окт. 19, 2023

A spectacular feature of the botanical world is succulent flora, which presents a diversity life forms from fascinating to strange (Figs 123).Succulence describes fleshy tissue with high water content, yet as character state highly variable, ranging slightly planar leaves grossly corpulent stems cacti and aloes (Fig. 2; Grace, 2019;Peréz-Lopéz et al., 2023).The associated function also shows marked variation, salt storage, mechanical support and, in majority succulents, storage organic acids used crassulacean acid metabolism (CAM).Succulence hypothesized be essential for CAM photosynthetic pathway because it allows large amounts assimilated carbon form malate, assists process by trapping CO 2 released during day (Males, 2017; Borland 2018;Edwards, 2019).In typical photosynthesis, plants open stomata at night fix inorganic into malic using phosphoenolpyruvate (PEP) carboxylase (see figs 1 Chomthong Griffiths, 2023, this issue explanatory diagrams).The then stored vacuoles.During day, close, decarboxylated raise concentrations within levels that suppress wasteful photorespiration.Rubisco refixes trapped closed stomata, fixation products are synthesized sugars starch same biochemistry C 3 photosynthesis.Because over much transpiration low thus exhibit water-use efficiencies (WUE) photosynthesis.High WUE enables survival dry locations, include arid semi-arid landscapes, soil-less environments such epiphyte habitat on tree branches or lithophyte habit rock faces.CAM abundant well dispersed across world's flora occurring ferns, gymnosperms, monocots eudicots.As examined (Gilman 2023), photosynthesis independently evolved 60 times vascular plants, making one best examples evolutionary convergence complex trait living world.The repeated evolution has resulted hundreds genera close 18 000 species some degree CAM, numerous being recognized iconic

Язык: Английский

Процитировано

1
Morphological Plasticity and Reproductive Strategies ofKalanchoeSpecies in Invasive Spread DOI Open Access
Zhe Zhang, Daisuke Sugiura, Wataru Yamori

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Дек. 25, 2024

Abstract Kalanchoe species, originally introduced worldwide as ornamentals, are now reported to be spreading in many regions, including China. It is hypothesized that morphological plasticity and the production of asexual plantlets contribute their successful invasion. To address hypothesis, four species - delagoensis Eckl. & Zeyh., × houghtonii D. B. Ward, laetivirens Desc. daigremontiana Raym. Hamet H. Perrier were cultivated under contrasting light water conditions, reproductive vegetative traits examined. The plants subjected high tended prioritize plantlet production, accompanied by a reduction growth. Two distinct strategies observed: K. significantly increased whereas enhanced fresh weight individual without altering total number produced. These results highlight growth response availability. may widespread occurrence open fields.

Язык: Английский

Процитировано

0