Phytohormones in plant root-<i>Piriformospora indica</i>mutualism

Schäfer, Patrick; Pfiffi, Stefanie; Voll, Lars M.; Zajic, Doreen; Chandler, Peter M.; Waller, Frank; Scholz, Uwe; Pons-Kühnemann, Jörn; Sonnewald, Sophia; Sonnewald, Uwe; Kogel, Karl‐Heinz

doi:10.4161/psb.4.7.9038

Cited by 40 publications

(14 citation statements)

References 24 publications

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“…Extracellular fungal development induces gene expression of abscisic acid (ABA) and early penetration and colonization increase the synthesis of gibberellic acid (GA). This is associated with induction of all the genes in the non-mevalonate pathway (Schäfer et al 2009). It is interesting that the leaves of S. rebaudiana accumulate tetracyclic diterpenes that are synthesized via the non-mevalonate pathway and share the same kaurenoid precursor as GA (Brandle and Telmer 2007).…”

Section: Discussionmentioning

confidence: 98%

Combined effects of Piriformospora indica and Azotobacter chroococcum enhance plant growth, antioxidant potential and steviol glycoside content in Stevia rebaudiana

et al. 2015

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The herb Stevia rebaudiana Bertoni is an important sugar substitute due to the presence of steviol glycosidesmainly stevioside and rebaudioside-A. These compounds possess antioxidant activity with industrial importance. The fungus Piriformospora indica has been used to improve medicinally important biomolecules, growth and secondary metabolite content in plants. The soil bacterium Azotobacter chroococcum has also been reported to possess plant growth promoting ability. The present study was undertaken to test the ability of P. indica (Pi) and A. chroococcum (Az), alone and in combination to improve the growth, antioxidant activity and steviol glycoside (SG) content of in vitro S. rebaudiana plantlets. Inoculation with Pi or Az alone showed enhancement in all these characters compared with non-inoculated plantlets. Combined inoculation with Pi and Az further enhanced these traits.

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Section: Discussionmentioning

confidence: 98%

Combined effects of Piriformospora indica and Azotobacter chroococcum enhance plant growth, antioxidant potential and steviol glycoside content in Stevia rebaudiana

et al. 2015

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“…Plant hormones might be a key to explain the broad host spectrum of P. indica. [35][36][37] Auxin for example has been proposed to be involved in P. indica-induced growth stimulation. [37][38][39] In our experiments, there was extensive branching of roots treated with fungus, which provides evidence that auxin also plays a role in the C. forskohlii/P.…”

Section: Discussionmentioning

confidence: 99%

The root endophyte fungusPiriformospora indicaleads to early flowering, higher biomass and altered secondary metabolites of the medicinal plant,Coleus forskohlii

Das

Kamal²,

Shakil

et al. 2012

Plant Signaling & Behavior

141

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This study was undertaken to investigate the influence of plant probiotic fungus Piriformospora indica on the medicinal plant C. forskohlii. Interaction of the C. forskohlii with the root endophyte P. indica under field conditions, results in an overall increase in aerial biomass, chlorophyll contents and phosphorus acquisition. The fungus also promoted inflorescence development, consequently the amount of p-cymene in the inflorescence increased. Growth of the root thickness was reduced in P. indica treated plants as they became fibrous, but developed more lateral roots. Because of the smaller root biomass, the content of forskolin was decreased. The symbiotic interaction of C. forskohlii with P. indica under field conditions promoted biomass production of the aerial parts of the plant including flower development. The plant aerial parts are important source of metabolites for medicinal application. Therefore we suggest that the use of the root endophyte fungus P. indica in sustainable agriculture will enhance the medicinally important chemical production.

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“…IAA was detected in culture filtrates of axenically grown P. indica and in addition the fungus may induce auxin production in the host plant (Peškan-Berghöfer et al 2004). Schäfer et al (2009) studied role of phytohormones in the mutualism involving P. indica and host plant roots. They stressed the importance of phytohormones in the association.…”

Section: Discussionmentioning

confidence: 99%

Influence of culture filtrate of Piriformospora indica on growth and yield of seed oil in Helianthus annus

2011

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The root endophytic fungus Piriformospora indica is a prime candidate to improve the growth and yield of plants. It also acts as a growth promoter and bioprotector, as well as combating environmental stress in a range of plant species. In the present investigation impact of a P. indica culture filtrate was studied on Helianthus annus Sun gold and H. annus Japanese gold varieties in the greenhouse. Treatment with the P. indica culture filtrate promoted overall growth and seed production of the plants. Moreover, the oil content of the seeds increased by 50% to 70% in these two varieties of H. annus plants. The possible reasons for these effects are discussed.

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Phytohormones in plant root-Piriformospora indicamutualism

Cited by 40 publications

References 24 publications

Combined effects of Piriformospora indica and Azotobacter chroococcum enhance plant growth, antioxidant potential and steviol glycoside content in Stevia rebaudiana

Combined effects of Piriformospora indica and Azotobacter chroococcum enhance plant growth, antioxidant potential and steviol glycoside content in Stevia rebaudiana

The root endophyte fungusPiriformospora indicaleads to early flowering, higher biomass and altered secondary metabolites of the medicinal plant,Coleus forskohlii

Influence of culture filtrate of Piriformospora indica on growth and yield of seed oil in Helianthus annus

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