Leaf Phosphorus Concentration Regulates the Development of Cluster Roots and Exudation of Carboxylates in Macadamia integrifolia

Zhao, Xin; Lyu, Yang; Jin, Kemo; Lambers, Hans; Shen, Jianbo

doi:10.3389/fpls.2020.610591

Cited by 8 publications

(4 citation statements)

References 78 publications

(123 reference statements)

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“…Generally, leaf nitrogen content in grasses should not exceed 3.5% [ 33 ]; thus, our findings showed safe values. Leaf phosphorus content in grasses does not usually exceed 0.7–0.8% [ 34 ], which agrees with our findings, whereas leaf potassium content can range between 1.2 and 2.0% [ 35 ]. This simulates that the selected grasses may show some K deficiency.…”

Section: Discussionsupporting

confidence: 90%

Biomass and Leaf Nutrition Contents of Selected Grass and Legume Species in High Altitude Rangelands of Kashmir Himalaya Valley (Jammu & Kashmir), India

Mugloo

Khanday

Dar

et al. 2023

Plants

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The yield and nutritional profile of grass and legume species in Kashmir Valley’s rangelands are scantly reported. The study area in this paper included three types of sites (grazed, protected, and seed-sown) divided into three circles: northern, central, and southern Kashmir. From each circle, three districts and three villages per district were selected. Most sites showed higher aboveground biomass (AGB) compared to belowground biomass (BGB), which showed low to moderate effects on biomass. The comparison between northern, central, and southern Kashmir regions revealed that AGB (86.74, 78.62, and 75.22 t. ha−1), BGB (52.04, 51.16, and 50.99 t. ha−1), and total biomass yield (138.78, 129.78, and 126.21 t. ha−1) were the highest in central Kashmir region, followed by southern and northern Kashmir regions, respectively. More precisely, AGB and total biomass yield recorded the highest values in the protected sites of the central Kashmir region, whereas BGB scored the highest value in the protected sites of southern Kashmir region. The maximum yield (12.5 t. ha−1) recorded among prominent grasses was attributed to orchard grass, while the highest crude fiber and crude protein contents (34.2% and 10.4%, respectively), were observed for Agrostis grass. The maximum yield and crude fiber content (25.4 t. ha−1 and 22.7%, respectively), among prominent legumes were recorded for red clover. The highest crude protein content (33.2%) was attributed to white clover. Those findings concluded the successful management of Kashmir rangelands in protected sites, resulting in high biomass yields along with the considerable nutritional value of grasses and legumes.

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Section: Discussionsupporting

confidence: 90%

Biomass and Leaf Nutrition Contents of Selected Grass and Legume Species in High Altitude Rangelands of Kashmir Himalaya Valley (Jammu & Kashmir), India

Mugloo

Khanday

Dar

et al. 2023

Plants

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“…The phosphorus absorption efficiency (PAE) is very useful for providing plants with a high phosphorus efficiency [30]. It has been reported that the correlation analysis between plant P content and plant biomass showed that the phosphorus absorption content was positively correlated with the plant's growth [35,36]. Our results showed that invasive Wedelia had a lower PAE decrease ratio than native Wedelia under various P forms and growth stages.…”

Section: Discussionmentioning

confidence: 55%

Invasive Wedelia trilobata Performs Better Than Its Native Congener in Various Forms of Phosphorous in Different Growth Stages

Hu,

Khan,

Wang

et al. 2023

Plants

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At present, many hypotheses have been proposed to explain the mechanism of alien plants’ successful invasion; the resource fluctuations hypothesis indicates that nutrient availability is a main abiotic factor driving the invasion of alien plants. Higher phosphorus utilization and absorption efficiency might be one of the important reasons for alien plants successful invasion. Wedelia trilobata, one of the notorious invasive weeds in China, possesses a strong ability to continue their development under infertile habitats. In this study, firstly, W. trilobata and its native congener, W. chinensis, were grown in various phosphorus forms to test their absorption efficiency of phosphorus. Secondly, the different responses of W. trilobata and W. chinensis to the insoluble phosphorus in three growth stages (at 30, 60, and 150 days cultivation) were also tested. The results showed that the growth rate, root morphology, and phosphorus absorption efficiency of W. trilobata under various insoluble, organic, or low phosphorus conditions were significantly higher than that of W. chinensis. During the short-term cultivation period (30 d), the growth of W. trilobata under insoluble and low phosphorus treatments had no significant difference, and the growth of W. trilobata in insoluble phosphorus treatment also had no significant effect in long-term cultivation (60 and 150 d). However, the growth of W. chinensis in each period under the conditions of insoluble and low phosphorus was significantly inhibited throughout these three growth stages. Therefore, invasive W. trilobata had a higher phosphorus utilization efficiency than its native congener. This study could explain how invasive W. trilobata performs under nutrient-poor habitats, while also providing favorable evidence for the resource fluctuations hypothesis.

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“…Inclusion of E. todtiana also increased CR production and the CR‐to‐non‐CR ratio in B. menziesii . Taken together, these results reflected the greater demand to mobilise P of B. menziesii in the mixture when E. todtiana competed for some of the mobilised P (Zhao et al ., 2021). Conversely, the significant increase in biomass and leaf P content without alteration of root‐to‐shoot ratio of E. todtiana indicated its P status was enhanced by facilitation by the carboxylate‐releasing P‐mobilising B. menziesii .…”

Section: Discussionmentioning

confidence: 99%

Facilitative and competitive interactions between mycorrhizal and nonmycorrhizal plants in an extremely phosphorus‐impoverished environment: role of ectomycorrhizal fungi and native oomycete pathogens in shaping species coexistence

Gille,

Finnegan,

Hayes

et al. 2023

New Phytologist

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Summary Nonmycorrhizal cluster root‐forming species enhance the phosphorus (P) acquisition of mycorrhizal neighbours in P‐impoverished megadiverse systems. However, whether mycorrhizal plants facilitate the defence of nonmycorrhizal plants against soil‐borne pathogens, in return and via their symbiosis, remains unknown. We characterised growth and defence‐related compounds in Banksia menziesii (nonmycorrhizal) and Eucalyptus todtiana (ectomycorrhizal, ECM) seedlings grown either in monoculture or mixture in a multifactorial glasshouse experiment involving ECM fungi and native oomycete pathogens. Roots of B. menziesii had higher levels of phytohormones (salicylic and jasmonic acids, jasmonoyl‐isoleucine and 12‐oxo‐phytodienoic acid) than E. todtiana which further activated a salicylic acid‐mediated defence response in roots of B. menziesii, but only in the presence of ECM fungi. We also found that B. menziesii induced a shift in the defence strategy of E. todtiana, from defence‐related secondary metabolites (phenolic and flavonoid) towards induced phytohormone response pathways. We conclude that ECM fungi play a vital role in the interactions between mycorrhizal and nonmycorrhizal plants in a severely P‐impoverished environment, by introducing a competitive component within the facilitation interaction between the two plant species with contrasting nutrient‐acquisition strategies. This study sheds light on the interplay between beneficial and detrimental soil microbes that shape plant–plant interaction in severely nutrient‐impoverished ecosystems.

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Leaf Phosphorus Concentration Regulates the Development of Cluster Roots and Exudation of Carboxylates in Macadamia integrifolia

Cited by 8 publications

References 78 publications

Biomass and Leaf Nutrition Contents of Selected Grass and Legume Species in High Altitude Rangelands of Kashmir Himalaya Valley (Jammu & Kashmir), India

Biomass and Leaf Nutrition Contents of Selected Grass and Legume Species in High Altitude Rangelands of Kashmir Himalaya Valley (Jammu & Kashmir), India

Invasive Wedelia trilobata Performs Better Than Its Native Congener in Various Forms of Phosphorous in Different Growth Stages

Facilitative and competitive interactions between mycorrhizal and nonmycorrhizal plants in an extremely phosphorus‐impoverished environment: role of ectomycorrhizal fungi and native oomycete pathogens in shaping species coexistence

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