scholarly journals Metabolic plasticity in the hygrophyte Moringa oleifera exposed to water stress

2018 ◽  
Author(s):  
Cecilia Brunetti ◽  
Francesco Loreto ◽  
Francesco Ferrini ◽  
Antonella Gori ◽  
Lucia Guidi ◽  
...  
Keyword(s):  
Water Stress ◽  
Moringa Oleifera ◽  
Metabolic Plasticity

scholarly journals Floral and Pollen Traits of Moringa oleifera Lam. and Moringa peregrina (Forssk.) Fiori Provide Reproductive Adaptations for Arid Conditions

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1090
Author(s):  
Yiftach Vaknin ◽  
Dan Eisikowitch ◽  
Adina Mishal
Keyword(s):  
Water Stress ◽  
Reproductive Success ◽  
Chemical Analysis ◽  
Arid Regions ◽  
Moringa Oleifera ◽  
Pollen Grains ◽  
Food Crops ◽  
Arid Conditions ◽  
Moringa Peregrina ◽  
Moringa Oleifera Lam

Our study attempted to elucidate the significance of floral and pollen traits of the highly nutritious tropical trees Moringa oleifera and Moringa peregrina for their reproductive success under arid conditions. We found that the pollen grains of both species were immersed in a pollenkitt that constituted ~ 60% of the pollen. Successful pollination was achieved by large bees inserting the pollen into a narrow stylar tube. We found that, upon removal of the pollenkitt, approximately 65% fewer pollen grains penetrated the stylar tube for both species. The pollenkitt protected against heat and desiccation, while removing the pollenkitt resulted in significantly reduced levels of the viability of pollen grains, especially in M. oleifera, and significantly reduced levels of germinability in both species. The stylar tube provided high protection for pollen grains against heat and desiccation even when the pollenkitt was removed. Chemical analysis of pollenkitts of the two species revealed a waxy blend of 21 hydrocarbon compounds, in which n-alkanes constituted > 90% of the compounds and their identity corresponded to known plant and animal hydrocarbons, associated with protection against heat and water stress. We concluded that, under arid conditions, the reproductive success of both Moringa species is potentially enhanced by their unique floral and pollen traits. This supports the prospect of cultivating M. oleifera and Moringa peregrina as food crops in arid regions across the globe.

scholarly journals Effect of different vermicompost doses and water stress conditions on plant growth and biochemical profile in medicinal plant, Moringa oleifera Lam

2020 ◽  
Vol 41 (2) ◽  
pp. 240-246 ◽  
Author(s):  
J.M. Guzmán-Albores ◽  
◽  
J.A. Montes-Molina ◽  
J.H. Castañón-González ◽  
M. Abud-Archila ◽  
...  
Keyword(s):  
Water Stress ◽  
Plant Growth ◽  
Medicinal Plant ◽  
Moringa Oleifera ◽  
Stress Conditions ◽  
Biochemical Profile ◽  
Moringa Oleifera Lam

scholarly journals Growth and biochemical responses of moringa (Moringa oleifera L.) to vermicompost and phosphate rock under water stress conditions

Phyton ◽  
2018 ◽  
Vol 87 (1) ◽  
pp. 209-215
Author(s):  
Abud-Archila M ◽  
AK Espinosa-Arrioja ◽  
T Gonz醠ez-Soto ◽  
VF Guti閞rez-Oliva ◽  
V Ru韟-Valdiviezo ◽  
...  
Keyword(s):  
Water Stress ◽  
Phosphate Rock ◽  
Moringa Oleifera ◽  
Stress Conditions ◽  
Biochemical Responses

Biscogniauxia (Hypoxylon) Canker or Dieback in Trees

EDIS ◽  
2017 ◽  
Vol 2017 (6) ◽  
Author(s):  
Claudia Paez ◽  
Jason A. Smith
Keyword(s):  
Water Stress ◽  
Tree Species ◽  
Soil Compaction ◽  
Urban Areas ◽  
Root Disease ◽  
Poor Health ◽  
Green Spaces ◽  
Opportunistic Pathogens ◽  
Wide Range ◽  
Quercus Spp

Biscogniauxia canker or dieback (formerly called Hypoxylon canker or dieback) is a common contributor to poor health and decay in a wide range of tree species (Balbalian & Henn 2014). This disease is caused by several species of fungi in the genus Biscogniauxia (formerly Hypoxylon). B. atropunctata or B. mediterranea are usually the species found on Quercus spp. and other hosts in Florida, affecting trees growing in many different habitats, such as forests, parks, green spaces and urban areas (McBride & Appel, 2009).  Typically, species of Biscogniauxia are opportunistic pathogens that do not affect healthy and vigorous trees; some species are more virulent than others. However, once they infect trees under stress (water stress, root disease, soil compaction, construction damage etc.) they can quickly colonize the host. Once a tree is infected and fruiting structures of the fungus are evident, the tree is not likely to survive especially if the infection is in the tree's trunk (Anderson et al., 1995).

Citrus Irrigation Management

EDIS ◽  
2017 ◽  
Vol 2017 (5) ◽  
Author(s):  
Davie Mayeso Kadyampakeni ◽  
Kelly T. Morgan ◽  
Mongi Zekri ◽  
Rhuanito Ferrarezi ◽  
Arnold Schumann ◽  
...  
Keyword(s):  
Water Stress ◽  
Physiological Activity ◽  
Irrigation Management ◽  
Fruit Size ◽  
Irrigation Scheduling ◽  
Leaf Expansion ◽  
Tree Canopy ◽  
Limiting Factor ◽  
Irrigation Frequency ◽  
Citrus Production

Water is a limiting factor in Florida citrus production during the majority of the year because of the low water holding capacity of sandy soils resulting from low clay and the non-uniform distribution of the rainfall. In Florida, the major portion of rainfall comes in June through September. However, rainfall is scarce during the dry period from February through May, which coincides with the critical stages of bloom, leaf expansion, fruit set, and fruit enlargement. Irrigation is practiced to provide water when rainfall is not sufficient or timely to meet water needs. Proper irrigation scheduling is the application of water to crops only when needed and only in the amounts needed; that is, determining when to irrigate and how much water to apply. With proper irrigation scheduling, yield will not be limited by water stress. With citrus greening (HLB), irrigation scheduling is becoming more important and critical and growers cannot afford water stress or water excess. Any degree of water stress or imbalance can produce a deleterious change in physiological activity of growth and production of citrus trees.  The number of fruit, fruit size, and tree canopy are reduced and premature fruit drop is increased with water stress.  Extension growth in shoots and roots and leaf expansion are all negatively impacted by water stress. Other benefits of proper irrigation scheduling include reduced loss of nutrients from leaching as a result of excess water applications and reduced pollution of groundwater or surface waters from the leaching of nutrients. Recent studies have shown that for HLB-affected trees, irrigation frequency should increase and irrigation amounts should decrease to minimize water stress from drought stress or water excess, while ensuring optimal water availability in the rootzone at all times.

Sign in / Sign up

Export Citation Format

Share Document